Phenotypic and Bioactive Diversity on Medlar Fruits (Mespilus germanica L.)

Mespilus germanica, known as the medlar, is a large shrub or small tree. The fruit has been cultivated since Roman times, and is unusual in being available in winter, and in being eaten when bletted.  In this study twelve medlar (Mespilus germanica L.) genotypes were harvested at commercial maturity stage (skin brownish, pulp white, fruit hard) from Rize provinces located eastern black sea region and were analyzed for their some important fruit phenotypic (fruit mass, shape index, fruit firmness, ostiole diameter and fruit flesh ratio) and bioactive characteristics (total phenolic content, total antioxidant capacity, vitamin C and phenolic compounds). A wide variation among genotypes on most of the searched parameters was found. Fruit mass and flesh ratio varied from 12.3 g (KRD-1) to 23.6 g (KRD-8) and 83.6?% (KRD-2) to 93.0?% (KRD-4) indicating high variability among genotypes. The total phenolic contents of twelve medlar genotypes varied from 157 to 227 mg gallic acid equivalent in 100 g fresh weight basis. Chlorogenic acid, rutin and p-coumaric acid were dominant in medlar fruits.     

Morphological,Biochemical and Antioxidant Properties of Local Loquat (<Emphasis Type="Italic">Eriobotrya Japonica</Emphasis> (Thunb.) Lindl.) Germplasm from Turkey

Loquat (Eriobotrya japonica L.) grown well for commercial purposes in subtropical regions nearly 30 countries and originated from China. The most important loquat producers in the world are China, Spain, Turkey, Pakistan, India, Italy and Brazil. In this study, ten pre-selected promising loquat genotypes sampled from eastern Black region and analyzed for their important morphological, biochemical and antioxidant characteristics. The standard cultivar ‘Sayda’ is also included in the study. The results indicated differences for all of the morphological, biochemical and antioxidant characteristics among tested genotypes. Fruit mass and fruit flesh percentage of the genotypes ranged from 35.40?g (LOQ-8) to 46.90?g (LOQ-5) and from 79.40 (%) to 86.32 (%) indicating some local genotypes had higher fruit mass and fruit flesh percentage than standard cultivar ‘Sayda’. Total phenolic content was the highest as 263?μg GAE/g in LOQ-7 genotype while the lowest in LOQ-8 genotype (185?μg GAE/g). LOQ-7 genotype had the highest total antioxidant capacity. Local genotypes in general have higher total phenolic, total carotenoid, vitamin C and antioxidant activity than cv. ‘Sayda’.     

The role of Pre-harvest Aminoethoxyvinylglycine (AVG) Treatments on Total Phenolics,Antioxidant Capacity and Fruit Quality Attributes of Sweet Cherry Cultivars

The present study was conducted to investigate the effects of pre-harvest aminoethoxyvinylglycine (AVG) treatments on fruit quality parameters and bioactive compounds of sweet cherry fruits (Prunus avium L. cvs. ’0900 Ziraat’, ‘Regina’ and ’Sweetheart’). Whole trees were sprayed once with an aqueous solution containing AVG (0, 100 and 200?mg L^?1) three weeks before the anticipated commercial harvest. Measurements were performed a week before anticipated harvest date, at anticipated harvest date and a week after anticipated harvest date. AVG treatments significantly maintained flesh firmness of all three sweet cherry cultivars. Harvest was delayed at least for a week through the keeping of flesh firmness with AVG treatments. The treatments slowed down the red skin color development in all three cultivars. The measurements performed over fruits collected at different ripening stages revealed that AVG resulted in decreased total phenolics and total anthocyanin and ultimately decreased antioxidant capacity in sweet cherry fruits. AVG treatments also decreased soluble solids content and increased titratable acidity of the fruits. This study revealed that pre-harvest AVG treatments were more effective in delaying sweet cherry fruit softening. The main advantage is to maintain the firmness of late-harvested fruit by retaining fruit quality attributes of sweet cherry fruit.     

Determination of Chemical Composition and Nutritive Value with Fatty Acid Compositions of African Mangosteen (<Emphasis Type="Italic">Garcinia Livingstonei</Emphasis>)

African mangosteen (Garcinia livingstonei T. Anderson) is native to Africa and is exotic to other parts of the world. It is a fruit bearing tree with multiple uses. This study was purposed to determine, by analysis, the chemical compositions and nutritive value of the fruits of African mangosteen. Proximate compositions varied with the portions such as epicarp, mesocarp, endocarp and seed tested. All fruit portions contained carbohydrate (37.67–95.02%) and crude protein (0.65–31.76%) as their major components. Moisture (0.45–3.42%), crude fat (1.23–19.55%), crude fiber (2.93–21.13%) and ash (1.76–5.44%) were also found at different levels, depending upon the portions. All portions of fruit were rich in macro and micro elements. The fruits also possessed phenolics (174.02–10.725?mg GAE per g), flavonoid (19.25 to 99.98?µg QE per g) and alkaloid (1.56 to 9.49?mg/kg) contents. The constitution of tannins and oxalate which contribute towards the anti-nutritive value was also low, thus making the fruits beneficial for consumption. Quality attributes like relative amount of oleic acid, total unsaturated fatty acid, acid value, free fatty acid, peroxide value and iodine value showed that the seed oil of African mangosteen can become one among the oleic acid based vegetable oils for consumption.     

Apfel oder Acai: Brasiliens Obstbau im ökonomischen und klimatischen Wandel

In times of recession with a 7–10% inflation rate, drop in consumption and loss in value of the Real currency, Brazil as the third largest fruit producer with 46 mil t fruit on 2.2 mil ha (2013), exports ca. 3% of its production worth ca. 765 mil (2013) – 807 (2014) US $, of which 80% is destined for Europe – the fruit export target for the future is 1 bil US $. Apple (cv. ‘Gala’ and ‘Fuji’) production under Southern hemisphere conditions (26–31°S) in Brazil rose from 0.6 mil t in 2002, peaked at 1.4 million t on 39,600?ha in 2011/12, declining in 2012/13 to 1.05 mil t due to orchard reductions in Fraiburgo as a result of lack of chilling, 1.16 mil t in both 20131/4 and 2014/15 and then 0.8 mil t in 2015/16 on 36,090?ha, resembling average apple yields in Germany on 31,400?ha.Apple orchards are essentially free of fire blight and codling moth, but with 1700?mm annual precipitation, they are affected by the scab and Glomorella fungi. Climate change affects apple production: Lack of chilling, caused by cold winters, induces vertical vegetative branches, flat speckled fruit with long pedicels (fruit stalks; cv. ‘Gala’), sunburn (cv. ‘Fuji’). Warm autumns result in a lack of fruit colouration in both varieties and prevent the cultivation of high chill apples, pears and plums.Three major fruit, orange (7.5?kg), banana (6.8?kg) and apple (cvs ‘Gala’ and ‘Fuji’; 4.2?kg apples/head/year; 2014) dominate the overall fruit consumption of 31.4?kg fruit/head/year compared with 36?kg beef, 34?kg pork and ca. 10?kg poultry resulting in ca. 80?kg meat/head/year in Brazil.In the last three years, a new range of storable apple varieties like ‘Venice’ and ’Daiane’ as well as ‘M 58/07’ and ‘M 10/09 – these latter two, still without a variety name – have been, like ’Eva’ added to the existing new breeds from EMBRAPA as very early variety (harvest in January; low chill; 150 CH) and to the summer varieties ‘Condessa’, ’Monalisa’ and ’Princesa’ (all 300–450 CH) without storability; red mutants of ‘Gala‘ (‘Gala, Maxi’ from RASIP) and of cv. ‘Fuji’ (‘Fuji Suprema’) both with 500–600 CH have been bred for growing in Brazil’s higher altitudes. The new cultivars provide medium-sized fruit, bright red peel colour and sweet taste with little acid and a sugar: acid ratio of 25–55:1, as required by Brazil’s domestic market, but so far lack market acceptance and a marketing concept.     

Verfrühung von Süßkirschen im Folienhaus

Early ripening sweet cherry cvs ‘Burlat’, ‘Earlise’, ‘Samba’, ‘Souvenir des Charmes’ and clone M, which are all characterised by large fruit size and dark red fruit, on GiSelA 5 rootstock were forced – by closing a polytunnel from 24 March to 20 April 2006 – at Klein-Altendorf research station of Bonn University. A portable gas heater was used for automated frost protection in April. An adjacent uncovered planting at the same spacing of 3.8?m?×?1.75?m served as control. Forcing resulted in a 16–18 days earlier flowering in April relative to the 12–16 days earlier harvest at the beginning of June, resulting in a 2–4 days longer fruit development and retarded ripening. PAR was reduced in the polytunnel by 40% on sunny and 30% on overcast days with a concurrent drop in the humidity to 30% on sunny and 40% on overcast days and nearly 100% relative humidity at night. Polytunnel air temperatures on sunny days were increased – during ventilation – by up to 6?°C relative to the outside, e.g. 33?°C versus 27?°C outside. Forced cherries saved one spray application against aphids compared to those outside. Fully-grown cherry leaves contained 40–60?mg chlorophyll/g FM sufficient for photosynthesis with commensurate chlorophyll contents when grown in the polytunnel compared with those outside, and were deficient in calcium (0.5% DM) and magnesium (0.2% DM), but with a surplus in both nitrogen (3.5% DM) and phosphorus (0.42% DM). The surplus leaf nitrogen was due to excessive nitrogen mineralization in the rich soil under the higher temperatures in the polytunnel which caused the vigorous vegetative growth despite the dwarfing rootstock. Great fluctuations in fertilisation – despite strong flowering and sufficient pollination with honey bees – of between 4–71% may be due to the combination of S-alleles of the cherry varieties, infrequent water supply, nutrient imbalance and microclimate. Trees of cv. ‘Burlat’, ‘Earlise’ and clone M in their fourth leaf yielded an average of 2.5–7.5?kg fruit with 15?kg/tree in one case. Fruit of forced cvs. ‘Burlat’, ‘Souvenir’ and ‘Samba’ were larger compared with those of cv. ‘Earlise’ and clone M, which were smaller as a result of increased fruit load on the tree than those from uncovered control trees. For all five cvs tested, except forced cv. ‘Earlise’, a fruit mass of between 10?g (28?mm ) and 12?g (30?mm) and a sugar content of 12–17% with sugar:acid ratios of 20–37:1 made their fruit suitable for marketing as superior or premium fruit at higher farm-gate prices of 4.5–8?€/kg. Fruits were sufficiently dark red or black and firm for short distance transport and rapid sale. An economic evaluation showed financial gains, when yields exceed 8?kg fruit per tree per year at a farm-gate price of 4.50?€/kg.     

Antioxidant Compounds,Nutritional Quality and Colour of Two Strawberry Genotypes from <Emphasis Type="Italic">Fragaria</Emphasis> × <Emphasis Type="Italic">Ananassa</Emphasis>

In this study, average weight, colour, soluble solids content and titratable acidity were determined as quality parameters of strawberry fruits while ascorbic acid, total anthocyanins, total phenolics, total flavonoids, minerals and trace elements content as nutritional parameters. All these attributes along with the DPPH radical scavenging activity were screened in two strawberry genotypes grown on the same site at the ripe stage. Also, the phenolic profiles of the strawberry fruits were obtained by HPLC. Except colour, results showed no significant differences between cultivars in quality parameters. Ascorbic acid found for ‘Premial’ cv. (81.62?mg/100?g) was twice the amount found in ‘Magic’ cv. (42.15?mg/100?g), total phenolics varied from 207.95 (cv. ‘Premial’) to 249.98 (cv. ‘Magic’) mg GAE/100?g while total flavonoid content in fruits of ‘Magic’ cultivar (79.56?mg/100?g) was 2?fold higher than the one of the ‘Premial’ cv. The quercetin content ranged from 2.72 to 4.66?mg/100?g, whereas free ellagic acid ranged from 6.79 to 9.03?mg/100?g. The pale shiny fruits of ‘Premial’ cv. (higher L*, h^o and chroma index) had a lower total anthocyanin content (19.07?mg CG/100?g) than the bluish fruits of the ‘Magic’ cv. (23.96?mg CG/100?g). An inverse relationship between the levels of ascorbic acid and anthocyanin contents was also noticed in strawberry samples. Significant differences were found also in minerals and trace elements content of the two strawberry cultivars. The results revealed the importance of genetic background for the content of antioxidant compounds in strawberry fruits.     

The Potential of Caprifig Genotypes for Sheltering <Emphasis Type="Italic">Blastophaga psenes</Emphasis> L. for Caprification of Edible Figs

Caprifig (Ficus carica L.) as pollen sources, play a major role in edible fig caprification by Blastophaga psenes L. The present study was carried out to evaluate the potential of three caprifig genotypes (Poozdombali, Kouhi and Kouhaki) for the shelter of B. psenes wasp in Estahban region, Fars province, Iran. Summer (profichi) crop fruits per genotype were harvested in full maturity period and evaluated for five times for the shelter of B. psenes wasp. Significant differences among caprifig genotypes were found for B. psenes number for the three times carried out (0, 21 and 28 days), but they did not show significant differences for two times (7 and 14 days). At day of harvesting, Poozdombali showed the highest B. psenes wasp number (341.33) and Kouhaki had the lowest (200.00) and they showed significant differences for this character in this time. Also, seven days after harvesting, Poozdombali showed the highest wasp number (106.67) and Kouhi and Kouhaki had the lowest (104.33), but not significant difference. Number of B. psenes at the day of harvesting was the highest for all of the genotypes and at 28 days after harvesting was the lowest. Cluster analysis identified two major clusters with several sub-clusters. Caprifig trees with having high B. psenes number are essential for a suitable caprification. Thus, Poozdombali genotype with the highest B. psenes number, is suitable in this important trait to be used for edible figs caprification.     

The Genus <Emphasis Type="Italic">Fragaria </Emphasis>in Croatia

Only three native species of genus Fragaria (F. moschata, F. vesca and F. viridis) are recorded in three regions of Croatia. These species as well as many of their hybrids, are, or once were, cultivated for their edible fruits. The majority of cultivated strawberries in Europe belong to garden strawberries F. x ananassa (hybrids of F. chiloensis and F. virginiana). The most expanded wild strawberry species in Croatia is a woodland strawberry (F. vesca) whose berries are gathered seasonally as wild edible fruits. They often contain higher amount of nutrients and bioactive compounds in comparison to cultivated varieties. The research on the genus Fragaria species distribution in Croatia has not been carried out, and so is the case with many others wild growing fruit species in Croatia. By summing up a number of individual citations and observations, it is possible to get a perspective regarding the current state of their distribution.     

Non-Destructive Evaluation of Edible Coatings Effects on Keeping Quality of European Plums (<Emphasis Type="Italic">Prunus domestica</Emphasis> L.) by Laser Light Backscattering Imaging

Fruits of European plum (Prunus domestica L.) show high rates of transpiration. Consequently, they are highly perishable fruit. In the present study, the potential of an edible coating (Versasheen®-based with sorbitol as plasticizer) to improve storage life and keeping quality was evaluated on fruit of the plum cultivars ‘Jojo’ and ‘Tophit plus’. Plums were picked at commercial harvest date and stored at 2?±?0.5?°C (90?±?2% rh) for up to 28?d plus 2?d at 20?°C to simulate shelf life. Every seventh day, plums were analysed for transpiration, colour changes and laser light backscattering imaging (LLBI) at a wavelength of 785?nm to non-destructively investigate variations in quality properties of plums. Finally, fruit flesh firmness, soluble solids content, and titratable acidity were determined destructively. Results indicated that coating of fruit of both cultivars increased their surface resistance against water vapour transfer resulting in lower transpiration rates and thus lower mass losses compared to controls. Consequently, coating of fruit considerably delayed the decrease in flesh firmness. Moreover, edible coating retarded the increase of FWHM785 in coated plums. In this context, FWHM785 proved as a rapid and non-destructive tool to monitor changes in mechanical properties in heavily coloured plums. Results highlight that edible coatings successfully extend post-harvest life of plums.     

Genetic and environmental variance components in guava fruit qualities

The proportion of genetic and environmental variances for fruit weight (FW), flesh thickness (FLT), flesh weight (FLW), fruit firmness (FF), seed cavity weight (SCW), total soluble solids (TSS), titratable acidity (TA), juice acidity (pH), and ascorbic acid (AA) in guava were estimated with eight genotypes, four trees per genotype, and five fruits per tree for two seasons. The variance components of the fruit traits were consisted of genotypic variance (4.2–65.1%), seasonal variance (0–61.0%), genotype by season interaction variance (2.0–17.0%), among trees within genotype variance (0–4.2%), tree by season interaction variance (0–7.4%), and among fruit within tree variance (19.0–50.7%). A high proportion of genotypic variance was found with FW, FLT, FLW, SCW, and AA indicating that genetic improvement for these traits through breeding and selection was achievable. Seasonal variance was high for pH, while among fruits within tree variance was greatest for FF, TA, and TSS. The traits which were high in either season were more difficult to improve genetically.     

Some Physicochemical Characteristics,Bioactive Content and Antioxidant Characteristics of Non-Sprayed Barberry (Berberis vulgaris L.) Fruits from Turkey

Increasing consumer demands for indigenous, non-sprayed with pesticides and less-known or “forgotten” fruits necessitate knowledge on their breeding, cultivation, biochemical content, harvesting and marketing. Anatolia is rich for wild edible fruit species and barberry is abundant throughout Anatolia. The aim of this study was to determine some important physicochemical characteristics, bioactive content and antioxidant capacity of fruits from nineteen promising barberry (Berberis vulgaris L.) genotypes grown in the Coruh valley, Northeastern Anatolia. The results indicated genotype-specific differences for most of the physicochemical characteristics, antioxidant capacity and the content of some bioactive compounds. Fruit mass ranged from 0.073 (‘Coruh-7’) to 0.267 g (‘Coruh-11’). Total phenolic content ranged from 2532 (‘Coruh-’) to 3719 mg GAE per liter fruit juice (‘Coruh-11’). The genotype ‘Coruh-12’ had the highest total monomeric anthocyanin content (1004 mg per liter fruit juice) as cyanidin-3-glucoside. The highest total antioxidant capacity was observed in fruits of ‘Coruh-8’ and ‘Coruh-9’ genotypes with all three antioxidant-determining methods. We conclude that the barberry fruits represent a good source of bioactive phytochemicals because of their high phenolic and anthocyanin contents.     

Genetic Diversity Among <Emphasis Type="Italic">Juglans Regia</Emphasis> Genotypes Based on Morphological Characters of Nut

Walnut germplasm from three different sites in Oltenia region, located in the southwestern part of Romania, was evaluated to determine the variability and to identify promising types. A total of 64 genotypes were evaluated using morphological characteristics of nuts. Considerable genetic variation in the measured traits was found in native trees which were of seedling origin. Variability found was between 7.62–20.90?g in nut weight, between 31.17 and 53.60?mm in nut length, between 24.81 and 37.48?mm in nut diameter I, and between 23.64 and 36.18?mm in nut diameter II. Separation of the three areas in multivariate space was assessed by calculating the Mahalanobis distance. The highest inter-populations value was observed between Bechet and Ostroveni population (1.83), followed by Sadova and Ostroveni population (1.08), which indicates a wide genetic distance between these populations. Cluster analyses showed a considerable diversity within the same germplasm population. The results indicated that most of genotypes were suitable in terms of morphological traits of nut. These data demonstrated large phenotypic diversity of nut among the selected genotypes that can be considered as a valuable gene stock for breeding programs.     

Assessment of Genetic Variability in Pistachio (<Emphasis Type="Italic">Pistacia vera</Emphasis> L.) with Nuclear SSR Molecular Markers

Pistachio (Pistacia vera L.) is considered to be the most widely cultivated species in the genus Pistacia and regarded as the most probable ancestral species within the genus. As one of the oldest nut crops in human history, pistachio nuts have a high nutritional value and are commercially important. In the present study, the genetic variation of pistachio genotypes was investigated by nuclear SSR markers. The transferability of the SSR markers was high across genotypes, thus, flanking regions of the SSRs are conserved in the studied genotypes. High level of polymorphism was detected among the studied genotypes. The seven SSR primer pairs generated a total of 18 alleles that 13 of them were polymorphic among the genotypes. The range of the polymorphic alleles was 1 (for Ptms9, Ptms40, Ptms41, and Ptms42) to 5 (for Ptms7 locus) with an average of 2.57. The amplified allele sizes ranged from 120 to 250?bp. Pair-wise genetic similarity coefficients varied from 0.20 to 0.75. The UPGMA dendrogram differentiated the genotypes into two major clusters. The present results may be used for the conservation, core collection and future breeding of the pistachio.     

Einfluss selektiver mechanischer Fruchtbehangsregulierung auf Ethylensynthese als Stressindikator sowie Ertrag und Fruchtqualität bei Kernobst

The overall objective of this work was to improve fruit quality, break alternate bearing and reduce hand thinning using fewer chemicals in fruit crops. A device was constructed for mechanical thinning, which consisted of three independent horizontal rotors with ropes and freely adjustable angles on a frame, mounted on a front three point hitch and powered by the tractor hydraulics. This can be adapted to any fruit tree trained as spindle, Solaxe, (tall) vertical axis or fruit wall (le mur fruitier) irrespective of rootstock employed. Rotor speed varied from 300 to 460?rpm at either 5 or 7.5?km/h tractor speed. Eight-year-old or twelve-old apple trees cvs. ‘Gala’ and ‘Golden Delicious’ were mechanically thinned in 2007 between pink bud and full bloom (flower bud stages 6–8 or F1–F2) near Bonn, Germany; non-thinned and hand-thinned apple trees of the same block and variety served as control. Mechanically thinned flowering branches showed a similar amount of ethylene efflux (0.4–0.6?ppm C₂H₄/branch) as non-thinned flower branches, preventing potentially unexpected subsequent fruit drop, except for those removed by the rotors. The impact of the horizontal rotors on the branches was from the upper side and removed excessive flowers right to the tree trunk viz. the centre of the tree canopy, where fruits of lesser quality are expected leaving 2–3 flowers per cluster. Leaf damage was less than??10%, even at the fast rotor speed of 420?rpm, which was associated with negligible wood injury. Mechanical thinning induced firmer and sweeter fruit, i.e. tastier apples with longer shelf life, relative to control fruit from non-thinned apple trees. The greatest efficacy in terms of final fruit quality in the grading/sorting was achieved by a rotor speed of 360?rpm at a tractor speed of 5?km/h: Fruit mass increased by up to 20?g and the proportion of fruit larger than 70–75?mm by 10–30% compared with the fruit from non-thinned trees. Mechanical thinning with this newly constructed device led to a 10–20% reduction in yield, but increased returns due to better fruit size and colouration in apple with the potential to overcome alternate bearing.     

Spritzungen mit Calciumchlorid erhöhen die Calcium- und reduzieren die Kaliumkonzentrationen der peripheren Schichten von Apfelfrüchten

Eight year old apple spindle trees (‘Elstar’, ‘Gala’, ‘Karmijn de Sonnaville’, ‘Pinova’, ‘Pilot’) were sprayed 12 times with aqueous CaCl₂ (400?l/ha) from July through September 2004. Controls (Fu) were trees sprayed with fungicides only (Captan 80, Dithane Ultra, Euparen M and Malvin). The treatment (FuCa) was sprayed with fungicides plus CaCl₂ (increasing concentrations from 5 to 25?g/l during the season) and the treatment FuCaTe contained in addition the surfactant Plantacare 1200 UP, which reduced surface tension to 29–30?mN/m. Ca concentration in the first layer (0–5?mm) of the control fruits (Fu) ranged from 7.6 (‘Elstar’) to 9.8?mg/100?g fresh weight (‘Pilot’). Ca concentrations in the second layer (5–10?mm) were lower and ranged from 4.5 (‘Pinova’) to 6.2?mg/100?g (‘Karmijn de Sonnaville’). CaCl₂ applications to fruits (FuCa) increased Ca concentrations in the first layer to 12.7 (‘Elstar’) or 14.2?mg/100?g (‘Pinova’ and ‘Pilot’). Ca concentrations in the second layer were also increased by the treatments. They ranged from 5.4 (‘Karmijn de Sonnaville’) to 9.1?mg/100?g (‘Pinova’). Adding the surfactant (FuCaTe) further increased Ca concentrations (‘Pilot’) up to 17.4 and 10.6?mg/100?g in the first and second layers, respectively. This effect of the surfactant was the result of faster penetration into fruits of CaCl₂ which reduced losses by rain shortly after spraying. Potassium concentrations were about 70?mg/100?g in both layers. Treatments with CaCl₂ leading to higher Ca concentrations in the fruits resulted in a decrease in K concentrations to 21 (first layer) or 50?mg/100?g (second layer). It is not clear if this was caused by a reduced K-influx into fruits or by displacement of K from peripheral into deeper layers of the fruits.     

Study on Antioxidant Components in Rosé Wine Originating from the Wine Growing Region of Moravia,Czech Republic

The estimation of antioxidants in fruit, vegetables, beverages, and foodstuffs has been discussed in a great number of scientific studies, but until now, problems concerning the analysis of antioxidant components of rosé wine has not been adequately investigated. This paper presented results of a study on antioxidant components contained in some samples of rosé wine originating from the Moravian wine growing region. The experiments involved altogether 48 samples of rosé wine made of grapes of the varieties ‘Blaufränkisch’, ‘Blauer Portugieser’, ‘Pinot Noir’, ‘Sankt Laurent’, and ‘Zweigeltrebe’. Grapes were harvested in 2013. Spectrophotometry was used to estimated antioxidant activity (53–73?mg?L^?1 GAE), content of total polyphenols (152–369?mg?L^?1), hydrocinnamic acid (52–148?mg?L^?1), flavonols (25–294?mg?L^?1) and anthocyanins (88–1754?mg?L^?1). The HPLC method was used for the detection of some important antioxidants, i.?e. catechin, epicatechin, malvidin-3-glucoside, cis- and trans-resveratrol, ferrulic acid, coumaric acid and caftaric acid. This study enabled to determine basic profiles of the most important antioxidant components of the most popular Moravian red grapevine varieties. The studied wines were analyzed from several different aspects, which is not standard.     

Electrochemical Properties and Biochemical Composition of <Emphasis Type="Italic">Cv. </Emphasis>Shiraz Wine Grape (<Emphasis Type="Italic">V. vinifera</Emphasis> L.) Depending on Various Dose and Application Time of Foliar Microbial Fertilizer Treatments

Utilization from bio fertilization is well known a considerable tool to improve the yield and fruit quality of various crop fruits through the increasing emphasis on maintain of soil health, minimize environmental pollution and decrease the use of chemical fertilization. In this study, in order to improve wine grape quality features of cv. Shiraz, four different doses of foliar microbial fertilizer, including 0, 1000, 2000 and 3000?ppm were applied at two different terms as Term I (mostly; pre-bloom applications) and Term II (mostly; post-bloom applications). However, there were no influences of application terms of foliar microbial fertilizer treatments; treatment doses had considerable effects on yield and quality parameters. The lowest p-values, meaning the highest berry quality, from doses of foliar microbial fertilizer were obtained from 2000?ppm (105.08?μW), 1000?ppm (110.40?μW), 3000?ppm (112.97?μW) and 0?ppm (119.58?μW). Comparing the applications of foliar microbial fertilizer, it was observed that doses of 2000?ppm (3155.56?mg/kg), 1000?ppm (3000.92?mg/kg) and 3000?ppm (2530.19?mg/kg) exhibited higher total phenolic compounds content when compared with 0?ppm treatment (2206.97?mg/kg). Berries from grapevines applied with the doses of 2000, 1000 and 3000?ppm foliar microbial fertilizer respectively shown higher total anthocyanin content such as 1230.19, 1160.85 and 865.86?mg/kg compared to 0?ppm (637.37?mg/kg). As a result, research the findings indicated that 2000 and 1000?ppm doses of foliar microbial fertilizer were obviously effective on wine grape quality features of cv. Shiraz in terms of electrochemical property, total phenolic compounds content and total anthocyanin content.     

5个枇杷晚熟品种果实氨基酸组成和含量分析

为了探讨白肉枇杷和红肉枇杷果实的风味和营养品质的差异,利用氨基酸自动分析仪测定了5个晚熟枇杷品种果实的氨基酸含量。结果表明,新白1号枇杷果实中天门冬氨酸和谷氨酸等鲜味类氨基酸含量占总氨基酸的53.9%,明显高于红肉枇杷中的含量;而红肉枇杷的甜味类氨基酸和芳香类氨基酸含量略高于白肉枇杷。白肉枇杷中药用氨基酸含量高于红肉枇杷,而红肉枇杷符合氨基酸模式谱的指标多于白肉枇杷。