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81.
Astaxanthin profiles and corresponding colour properties in Australian farmed black tiger prawn (Penaeus monodon) during frozen storage 下载免费PDF全文
Kent J Fanning Carl Paulo Sharon Pun Caterina Torrisi Kerrie Abberton Paul Exley Sue Poole 《Aquaculture Research》2016,47(6):1820-1831
The colour of commercial cooked black tiger prawns (Penaeus monodon) is a key quality requirement to ensure product is not rejected in wholesale markets. The colour, due to the carotenoid astaxanthin, can be impacted by frozen storage, but changes in colour or astaxanthin profile, during frozen storage, have not been studied in detail. Subsequently in this study, the aims were to define the astaxanthin (as cis, trans, mono‐ester and di‐ester forms) content, together with the colour properties, in both pleopods (legs) and abdominal segments. Changes in astaxanthin content and colour properties were further determined during frozen storage (?20°C). Total astaxanthin content was seen to decrease in all samples over time, with the rate of degradation being significantly greater (P < 0.05) in pleopods than abdomen. In both pleopods and abdomen, rate of degradation of esterified forms was significantly greater (P < 0.05) than non‐esterified forms. Hue angle (increase), a* value (decrease) and L value (increase) were all seen to significantly change (P < 0.05) during storage, with changes being more prevalent in the pleopods. The pleopods are the key indicator of astaxanthin and colour loss in cooked black tiger prawns and preservation strategies are required to preserve astaxanthin and colour during frozen storage. 相似文献
82.
Caterina L. Matasci Mauro Jermini Davide Gobbin Cesare Gessler 《European journal of plant pathology / European Foundation for Plant Pathology》2010,127(4):501-508
The genetic structure of a Plasmopara viticola population was characterized on five single vines, one for each cultivar Regent, Merlot, Isabella, Müller-Thurgau and Solaris,
using four neutral specific polymorphic microsatellite markers. Five-hundred and seventy samples were collected at four dates
in the period between the 10th of July and the 23rd of August 2006. On average over all five cultivars, 67% of the genotypes
present on the single selected vines derived from primary infections and caused 37% of the lesions genotyped. Fifty-three
percent of these genotypes occurred only once on the vine throughout the survey period, while 14% were able to asexually reproduce
on the selected single vine throughout the survey period, causing 23% of the lesions. Thirty-three percent of the genotypes
on the single vine derived from other vines, 28% from vines of other cultivars in the other rows, and 5% from vines of the
same cultivar in the same row. New primary infections appear all along the sampling dates. The overwhelmingly quantitative
role of primary infections at vineyard scale was known, however here we observed the phenomenon also at the single vine scale
and the reduced contribution of secondary lesions to the populations present on more resistant cultivars compared to the susceptible
cultivars. As the sampling extended almost to defoliation, the results are judged to be representative of a typical P. viticola epidemic. 相似文献
83.
Caterina Maria Antognazza J. Robert Britton Vanessa De Santis Konstantina Kolia Ossi A. Turunen Peter Davies Laura Allen Emilie A. Hardouin Charles Crundwell Demetra Andreou 《水产资源保护:海洋与淡水生态系统》2021,31(8):2029-2040
- Artificial barriers on lowland rivers impede the spawning migrations of anadromous fishes, preventing access to historical spawning areas. In the cryptic European shads Alosa alosa and Alosa fallax (‘shad’ hereafter), this has resulted in population declines across their range. Conservation programmes aim to facilitate the passage of migrators over these barriers and so require baseline information on the spatial and temporal extent of current migrations.
- Here, a shad-specific environmental DNA (eDNA) assay was used to quantify the spatial extent of shad spawning migrations in the River Severn basin, western England. This basin is characterized by the presence of multiple barriers in the lower catchment. In 2017, the eDNA assay was piloted in the River Teme, an important shad spawning tributary, and then applied in 2018 and 2019 across the lower Severn basin.
- In all years, shad DNA was detected between mid-May and mid-June, with the maximum spatial extent of shad distribution being in early June when shad eDNA was detected upstream of weirs that were generally considered as impassable. In 2018, this included the detection of shad above the most upstream weir on the main River Severn that required individual fish to have passed six weirs.
- Although barriers inhibit the spawning migrations of shad, this eDNA assay showed that some highly vagile individuals might be able to ascend these barriers and migrate considerable distances upstream. This suggests that efforts to increase the permeability of these barriers could result in relatively high numbers of migrating shad reaching upstream spawning areas. These results demonstrate that this eDNA assay could also be used across their range, to further quantify the spatial extent of their spawning, including in highly fragmented rivers and those where shad are believed to spawn only occasionally and are rarely observed.
84.
Jeyavani Jeyaraj Sibiya Ashokkumar Sivakamavalli Jeyachandran Divya Mani Preetham Elumalai Vaseeharan Baskaralingam Faggio Caterina 《Aquaculture International》2022,30(2):1071-1086
Aquaculture International - Aquaculture-based foods have enriched nutritional and medicinal value to meet the needs of the global population. Recently, improper maintenance of aquatic organisms in... 相似文献
85.
Caterina Puccinelli Simonetta Citi Tommaso Vezzosi Silvia Garibaldi Rosalba Tognetti 《Veterinary radiology & ultrasound》2021,62(1):20-26
Although echocardiography is the gold standard for the diagnosis of cardio‐structural disease, thoracic radiography is a rapid, cost‐effective, and widely accessible method for evaluating cardiac size in dogs. The vertebral heart score (VHS) and the vertebral left atrial size (VLAS) are established as objective measures of cardiomegaly on thoracic radiographs. However, several studies have shown significant variations in the VHS among different breeds. The Chihuahua is predisposed to both congenital and acquired cardiac diseases. The aim of this prospective, single‐center, cross sectional study was thus to evaluate the VHS and the VLAS in healthy adult Chihuahua dogs. A total of 30 Chihuahuas were included. The VHS values in our sample population of Chihuahuas were 10.0 ± 0.6 (95% range, 8.9‐11.0). This was significantly greater than the canine reference value of 9.7 ± 0.5 established by Buchanan and Bücheler (P = .002). The VLAS of Chihuahuas in our study was 1.8 ± 0.2 (95% range, 1.3‐2.1). This was significantly lower than the values previously reported by Malcolm et al (2.07 ± 0.25; P = .0004). The VHS and the VLAS were not influenced by sex, body weight, short or long hair, and body condition score in normal Chihuahuas. Our results indicated that breed‐specific reference values for radiographic VHS and VLAS are needed. In Chihuahuas, the values found in this study can be used as a normal reference in order to help avoid overinterpretation of cardiomegaly in these dogs. 相似文献
86.
Beghi E Bendotti C Mennini T Miller T Cleveland D 《Science (New York, N.Y.)》2005,308(5722):632-3; author reply 632-3
87.
Kuhnle GG Dell'Aquila C Aspinall SM Runswick SA Mulligan AA Bingham SA 《Journal of agricultural and food chemistry》2008,56(16):7311-7315
Phytoestrogens are secondary plant metabolites that have received increasing attention for their bioactivity, in particular due to their structural and functional similarity to 17beta-estradiol. Although urinary and plasma phytoestrogens can be used as biomarkers for dietary intake, this is often not possible in large epidemiological studies or in the assessment of general exposure in free-living individuals. Accurate information about dietary phytoestrogens is therefore important, but there are very limited data concerning food contents. In this study was analyzed a comprehensive selection of tea, coffee, alcoholic beverages, nuts, seeds, and oils for their phytoestrogen content using a newly developed sensitive method based on LC-MS incorporating (13)C 3-labeled standards. Phytoestrogens were detected in all foods analyzed, although the contents in gin and bitter (beer) were below the limit of quantification (1.5 microg/100 g). Lignans were the main type of phytoestrogens detected. Tea and coffee contained up to 20 microg/100 g phytoestrogens and beer (except bitter) contained up to 71 microg/100 g, mainly lignans. As these beverages are commonly consumed, they are a main source of dietary lignans. The results published here will contribute to databases of dietary phytoestrogen content and allow a more accurate determination of phytoestrogen exposure in free-living individuals. 相似文献
88.
The observed oogenesis impairment in greater amberjack Seriola dumerili (Risso, 1810) reared in captivity is not related to an insufficient liver transcription or oocyte uptake of vitellogenin 下载免费PDF全文
89.
Annalisa Pinsino Caterina Costa Roberta Russo Francesca Zito Valeria Guarrasi 《Journal Of Aquatic Food Product Technology》2018,27(1):122-130
The deep-water rose shrimp, Parapenaeus longirostris, is a target species of the Mediterranean fisheries mostly caught by trawlers offshore, processed, and frozen on board. The effects of thawing on shrimp muscle exudate collected at 0, 1, 2, 3 days after thawing were investigated. In total, 70-kDa heat-shock protein (Hsp70), alpha (α)-enolase, and manganese superoxide dismutase (Mn-SOD) were selected as metabolic and stress-related proteins and analyzed by immunoblotting on exudates. Data were compared for the amount of exudates collected and the pH values. Among the investigated proteins, only the Hsp70 levels showed a decrease related to the post-thawing period and correlated with both the significant increase of the exudate amount and the pH values. These data strongly suggest the potential use of Hsp70 as an early predictive biomarker for quality of the P. longirostris shrimp after thawing. 相似文献