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排序方式: 共有124条查询结果,搜索用时 385 毫秒
101.
Beatrice Falcinelli Ombretta Marconi Stefano Maranghi Stanley Lutts Adolfo Rosati Franco Famiani Paolo Benincasa 《Plant foods for human nutrition (Dordrecht, Netherlands)》2017,72(4):432-438
Pomegranate (Punica granatum L.) fruits are used mainly by the juice industry, for which seeds are a by-product to be disposed of, though they could potentially be a source of bioactive compounds. In this work, germination (total germination percentage, G; mean germination time, MGT; time to reach 80% of germination, TG80; seedling shoot length, fresh weight and dry matter), and nutritional value (total phenolics, TP; total flavonoids, TF; total non-tannins, TNT; antioxidant activities) of pomegranate seeds and sprouts were determined on four commercial pomegranate cultivars (Akko, Dente di Cavallo, Mollar de Elche and Wonderful). Seeds were removed from ripe fruits and incubated in plastic trays containing sterile cotton wetted with distilled water. Sprout shoots were harvested when they reached the complete cotyledon expansion, i.e., the ready-to-eat stage. Akko showed the best germination performance (G = 98%; MGT = 14 days after sowing, DAS; TG80 = 16 DAS), followed by Mollar de Elche. Sprouting dramatically increased TP, TF, TNT and antioxidant activity in all genotypes, with the highest values recorded in Mollar de Elche and Dente di Cavallo. Overall, based on germination performance, Akko and Mollar de Elche would be the best cultivars for sprouting. Sprouting pomegranate seeds appears to be a suitable way of utilizing by-products of the juice industry to obtain bioactive compounds. 相似文献
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Beatrice Darko Obiri Geoff A. Bright Morag A. McDonald Luke C. N. Anglaaere Joseph Cobbina 《Agroforestry Systems》2007,71(2):139-149
The cultivation of cocoa has been an important driver of tropical deforestation globally. Efforts to reverse this trend are
focusing on the reintroduction of shade trees to cocoa plantations. Shade trees are valuable in enhancing biophysical conditions
on cocoa (Theobroma cacao) fields and contribute to biodiversity and product diversification for smallholder producers. Participatory trials of cocoa
agroforests planted with indigenous shade tree species were undertaken with farmers in the Atwima District of the Ashanti
Region of Ghana, to increase tree volume on cocoa fields while improving rural livelihoods and enhancing environmental sustainability.
An ex ante financial analysis of the technology was undertaken to assess its economic viability. Input–output data were collected
from farmer experiments over three seasons and supplemented with data from traditional cocoa fields of varying rotation ages,
and secondary data on production in later years of an eighty-year cocoa rotation. A discounted cash flow analysis was carried
out to estimate the benefit-cost (B/C) ratio, net present value (NPV), internal rate of return (IRR) and land expectation
value (LEV) as well as the sensitivity to a 20% decline in cocoa prices and additional chemical costs for various shade scenarios
at a 10% discount rate. It was observed that cocoa production is, in general, profitable. The change from the traditional
system to one with hybrid cocoa raised the IRR from 31% to 57% with planted shade and 67% without, although extra agrochemical
costs would tend to reduce the profitability of unshaded hybrid cocoa in particular. The age of maximum LEV for the various
scenarios suggests that the optimum economic rotation for the hybrid cocoa is between 18 and 29 years, much less than the
traditional system. 相似文献
104.
Beatrice Potocki-Roth 《Journal of pest science》1979,52(7):105-107
Hot water having a minimum temperature of 55°C employed for at least ten minutes will kill all vermin on cacti—such as spider mites, mealy bugs, ground mealy bugs and root nematodes in all their stages of development. The hot water treatment is directed against mycoplasmalike organisms in cacti. TwoAustrocylindropuntia spp. cuttings of the same size were prepared. One was left untreated. The other was immersed for 12 minutes in hot water at 57°C and allowed to cool slowly down to 25°C. Sixteen months afterwards the cutting which was treated displayed a growth pattern different from the untreated one in that it exhibited a general pattern of growth like that of the cactusAustrocylindropuntia subulata. Its growth was characterized by the development of hairs and spines, intensive growth of thickness and formation of tubercles or protuberances. Moreover the leaflets were double so long as those in the untreated cutting and the feverish attempts to form new shoots were repressed. The untreated cutting displayed none of these characteristics. 相似文献
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107.
Sponseller BA Sponseller BT Alcott CJ Kline K Hostetter J Reinertson EL Fales-Williams A 《The Canadian veterinary journal. La revue veterinaire canadienne》2011,52(2):147-152
Syringomyelia and hydromyelia are cavitary lesions of the spinal cord that may be acquired or congenital. These lesions are not frequently reported in large animal species. The presenting complaints, clinical, gross pathological, and histopathologic findings of 2 cases of syringomyelia and 1 case of hydromyelia in horses are described. 相似文献
108.
Claude A. Andrist Bart H.P. van den Borne Lotti M. Bigler Theres Buchwalder Beatrice A. Roth 《Preventive veterinary medicine》2013,108(2-3):218-224
In Switzerland, group-housing for breeding rabbit does is not explicitly required by law, but label programmes, as well as the general public and animal welfare groups, are advocating it. Although group-housing is of great benefit to the gregariously living rabbits, the establishment of a social hierarchy within the group might lead to stress and lesions. In the present epidemiological study, lesions were scored twice on 30% of the breeding does on all 28 commercial Swiss farms with group-housed breeding does. Additionally, a detailed questionnaire was filled out with all producers to determine risk factors potentially associated with lesions. Data were analysed using hierarchical proportional odds models. About 33% of the does examined had lesions, including wounds that were almost healed and small scratches. Severe lesions were counted on 9% of the animals. Differences between seasons in lesions score were identified, with the extent of lesions being higher in summer than in spring. Fewer lesions occurred on farms on which mastitis was more common. More lesions were found on farms where the does were isolated between littering and artificial insemination than on farms without isolation. According to the producers, most of the aggression occurred directly after the isolation phase when the does were regrouped again. We conclude that lesions in group-housed breeding does might be reduced by appropriate reproductive management. 相似文献
109.
Barbara Forte Beatrice Malgesini Claudia Piutti Francesca Quartieri Alessandra Scolaro Gianluca Papeo 《Marine drugs》2009,7(4):705-753
In his most celebrated tale “The Picture of Dorian Gray”, Oscar Wilde stated that “those who go beneath the surface do so at their peril”. This sentence could be a prophetical warning for the practitioner who voluntarily challenges himself with trying to synthesize marine sponge-deriving pyrrole-imidazole alkaloids. This now nearly triple-digit membered community has been growing exponentially in the last 20 years, both in terms of new representatives and topological complexity – from simple, achiral oroidin to the breathtaking 12-ring stylissadines A and B, each possessing 16 stereocenters. While the biosynthesis and the role in the sponge economy of most of these alkaloids still lies in the realm of speculations, significant biological activities for some of them have clearly emerged. This review will account for the progress in achieving the total synthesis of the more biologically enticing members of this class of natural products. 相似文献
110.