[Objective] This study aimed to investigate the reason for the different leaf colors of pomegranate hybrid progeny. [Method] Spectrophotometry was used to determine the contents of three pigments, including chlorophyl...[Objective] This study aimed to investigate the reason for the different leaf colors of pomegranate hybrid progeny. [Method] Spectrophotometry was used to determine the contents of three pigments, including chlorophyll, carotenoid and anthocyanin, in the leaves of eight pomegranate individuals and their parents at growth stage. [Result] The results showed that during the early growth stage, the anthocyanin contents of four pomegranate individuals with red leaves were higher than the control, to be specific, the anthocyanin content of No.5 pomegranate individual reached the highest of 4.12 mg/g; the chlorophyll and carotenoid contents of four pomegranate individuals with yellow-green leaves showed consistent dynamic trends with the control, to be specific, the chlorophyll content and chlorophyll/carotenoid ratio of No.4 pomegranate individual reached the highest, while the chlorophyll a/carotenoid b ratio of No.3 pomegranate individual was the lowest. During vigorous growth stage, the contents of chlorophyll, carotenoid and anthocyanin of eight pomegranate individuals showed consistent dynamic trends, with no significant difference with the control. Analysis of variance indicated that there were significant differences in the contents of chlorophyll and carotenoid among different pomegranate individuals at different growth stages and in the content of anthocyanin among different pomegranate individuals, while no significant difference was observed in the chlorophyll/carotenoid ratio among different pomegranate individuals at different growth stages. [Conclusion] The differences in leaf colors among pomegranate hybrid progeny are caused by different contents and ratios of anthocyanin and chlorophyll at growth stage.展开更多
Peel browning of pomegranate fruit is the key problem during storage. The mechanism of it during storage in relation to the technology of the browning control was studied in this paper. The effects of storage temperat...Peel browning of pomegranate fruit is the key problem during storage. The mechanism of it during storage in relation to the technology of the browning control was studied in this paper. The effects of storage temperature, gas component and pH value on peel browning of sweet pomegranate fruit in Lintong, Shaanxi Province, China, were investigated. Change in tannin content was measured and the relationship between the activities of ascorbic acid oxidase （AAO）, polypenoloxidase （PPO）, peroxidase （POD）, catalase （CAT） and peel browning was analysed. The results showed tannin was the basic substance of pomegranate peel browning. The activities of the browning index of peel were correlated positively with AAO, PPO and POD, correlated negatively with CAT activity. Application of intermittent warming for 24 h at （15 ± 0.5）℃ every 5 days for pomegranate fruit storage under the conditions of pH 4.0, （5.0± 0.5）℃ and 5.0% CO2 ＋ 8.0% O2 ＋ 87.0% N2 gas component could delay browning, with the browning index being 0.15 after 120 days of storage. Enzymatic tannin denaturation was the main cause that led to peel browning of pomegranate fruit during storage. The browning control of pomegranate fruit peel was effective using intermittent warming storage with suitable pH, temperature and gas component.展开更多
Objective:To evaluate potential memory enhancing effect of Punica granatum peel extract on rats.Methods:Healthy adult male albino rats of Wistar strain were used.Each group of 6 rats were administered either distilled...Objective:To evaluate potential memory enhancing effect of Punica granatum peel extract on rats.Methods:Healthy adult male albino rats of Wistar strain were used.Each group of 6 rats were administered either distilled water or 50 mg/kg of extract or 100 mg/kg of extract for 15 days and subjected to passive avoidance test or T-maze test.In the next phase rats were administered distilled water or 100 mg/kg of extract for 15 days and the rats were given injection diazepam before subjecting them to the tests.Results:The overall performance was better in test groups compared to control groups.Among the test groups,100 mg/kg rats performed better than 50 mg/kg.The effect on spatial learning parameters like mean number of alternations and mean percentage bias was more marked compared to retention testing parameters like latency. 100 mg/kg Punica extract treated group also improved performance of diazepam treated rats. Conclusions:There is a definite trend of memory improvement by Punica granatum peel with effects being more marked on spatial learning tendency and long term memory than on retention capacity.展开更多
Recent investigations on pomegranate products have significantly increased and successfully drawn consumers’ attention to nutritional and medicinal values, promoting the pomegranate industry’s development worldwide....Recent investigations on pomegranate products have significantly increased and successfully drawn consumers’ attention to nutritional and medicinal values, promoting the pomegranate industry’s development worldwide. However, little information on pomegranates grown in China is available. Morphological and chemical characterizations of fruits and arils from 20 pomegranate cultivars in six regions of China were investigated. Combined with overall scores by principal component analysis, ‘Yushiliu No. 1’, ‘Taishanhong No. 2’, ‘Tunisia’ and ‘Mollar’ were promising cultivars, and Chinese researchers bred the first two. It was surprising that ‘Mollar’ had bigger fruit size and more aril moisture grown in China than in Spain. Cultivars with higher anthocyanin content in arils were ‘Turkey’, ‘Moyu’ and ‘Red Angel’, which might be used as the source of natural red food colourants. While red husk ‘Hongruyi’ and ‘Hongshuangxi’ with higher vitamin C, aril moisture and lower titratable acid in arils, might also be promising cultivars for further various utilization. Furthermore, the comparison of ‘Tunisia’ fruits from four regions revealed that cultivation locations had more influence on fruit traits than genotypes. Maturity index classification was established for Chinese pomegranate cultivars. Therefore, the results would provide a valuable guide for agricultural cultivation, industrial utilization, and breeding.展开更多
Objective: To assess the ameliorative properties of Iranian Trigonella foenum-graecum L.(T. foenum-graecum) seeds and Punica granatum L.(P. granatum) peel extracts against streptozotocin-induced diabetes in male guine...Objective: To assess the ameliorative properties of Iranian Trigonella foenum-graecum L.(T. foenum-graecum) seeds and Punica granatum L.(P. granatum) peel extracts against streptozotocin-induced diabetes in male guinea pigs.Methods: Sixty guinea pigs were divided into six groups(10 guinea pigs per group).Group 1 consisted of normal animals. Groups 2 and 3 were treated with Iranian T. foenum-graecum seeds and P. granatum peel extract alone, respectively. Group 4 was treated with streptozotocin only; whereas Groups 5 and 6 receiving streptozotocin were treated with Iranian T. foenum-graecum seeds and P. granatum peel extract, respectively.All animals were treated for 30 days, and the body weight, blood and liver biochemical parameters were measured.Results: Guinea pigs exposed to streptozotocin showed an alteration in body weight gain, fasting glucose level, kidney function parameters(blood urea nitrogen and creatinine) as well as decreased serum and hepatic total protein level. In addition, it increased the cholesterol and triglyceride level, while decreasing the hepatic glucose-6 phosphate dehydrogenase activity, glycogen, glutathione content and hepatic catalase activity. Oral treatment with T. foenum-graecum seeds and P. granatum peel extracts revealed significant protective properties with respect to body weight gain and other biochemical parameters studied.Conclusions: The Iranian T. foenum-graecum seeds and P. granatum peel extracts are significantly potent in ameliorating diabetic condition induced by streptozotocin and improving various biochemical parameters in serum and liver of guinea pigs.展开更多
基金Supported by Science and Technology Project of He'nan Province(072102150001)Science and Technology Project of Zhengzhou City(083SGYG24123-6)~~
文摘[Objective] This study aimed to investigate the reason for the different leaf colors of pomegranate hybrid progeny. [Method] Spectrophotometry was used to determine the contents of three pigments, including chlorophyll, carotenoid and anthocyanin, in the leaves of eight pomegranate individuals and their parents at growth stage. [Result] The results showed that during the early growth stage, the anthocyanin contents of four pomegranate individuals with red leaves were higher than the control, to be specific, the anthocyanin content of No.5 pomegranate individual reached the highest of 4.12 mg/g; the chlorophyll and carotenoid contents of four pomegranate individuals with yellow-green leaves showed consistent dynamic trends with the control, to be specific, the chlorophyll content and chlorophyll/carotenoid ratio of No.4 pomegranate individual reached the highest, while the chlorophyll a/carotenoid b ratio of No.3 pomegranate individual was the lowest. During vigorous growth stage, the contents of chlorophyll, carotenoid and anthocyanin of eight pomegranate individuals showed consistent dynamic trends, with no significant difference with the control. Analysis of variance indicated that there were significant differences in the contents of chlorophyll and carotenoid among different pomegranate individuals at different growth stages and in the content of anthocyanin among different pomegranate individuals, while no significant difference was observed in the chlorophyll/carotenoid ratio among different pomegranate individuals at different growth stages. [Conclusion] The differences in leaf colors among pomegranate hybrid progeny are caused by different contents and ratios of anthocyanin and chlorophyll at growth stage.
基金the Natural Science Foundation of Shaanxi Province,China(2004C109)Key Technology R&D Program of Shaanxi Province,China(2003K02-G6)Agricultural Science and Technology Development of Xi'an City,China(NG200313).
文摘Peel browning of pomegranate fruit is the key problem during storage. The mechanism of it during storage in relation to the technology of the browning control was studied in this paper. The effects of storage temperature, gas component and pH value on peel browning of sweet pomegranate fruit in Lintong, Shaanxi Province, China, were investigated. Change in tannin content was measured and the relationship between the activities of ascorbic acid oxidase （AAO）, polypenoloxidase （PPO）, peroxidase （POD）, catalase （CAT） and peel browning was analysed. The results showed tannin was the basic substance of pomegranate peel browning. The activities of the browning index of peel were correlated positively with AAO, PPO and POD, correlated negatively with CAT activity. Application of intermittent warming for 24 h at （15 ± 0.5）℃ every 5 days for pomegranate fruit storage under the conditions of pH 4.0, （5.0± 0.5）℃ and 5.0% CO2 ＋ 8.0% O2 ＋ 87.0% N2 gas component could delay browning, with the browning index being 0.15 after 120 days of storage. Enzymatic tannin denaturation was the main cause that led to peel browning of pomegranate fruit during storage. The browning control of pomegranate fruit peel was effective using intermittent warming storage with suitable pH, temperature and gas component.
文摘Objective:To evaluate potential memory enhancing effect of Punica granatum peel extract on rats.Methods:Healthy adult male albino rats of Wistar strain were used.Each group of 6 rats were administered either distilled water or 50 mg/kg of extract or 100 mg/kg of extract for 15 days and subjected to passive avoidance test or T-maze test.In the next phase rats were administered distilled water or 100 mg/kg of extract for 15 days and the rats were given injection diazepam before subjecting them to the tests.Results:The overall performance was better in test groups compared to control groups.Among the test groups,100 mg/kg rats performed better than 50 mg/kg.The effect on spatial learning parameters like mean number of alternations and mean percentage bias was more marked compared to retention testing parameters like latency. 100 mg/kg Punica extract treated group also improved performance of diazepam treated rats. Conclusions:There is a definite trend of memory improvement by Punica granatum peel with effects being more marked on spatial learning tendency and long term memory than on retention capacity.
基金funded by the Key R&D and Promotion Projects of Henan Province,China(192102110152)。
文摘Recent investigations on pomegranate products have significantly increased and successfully drawn consumers’ attention to nutritional and medicinal values, promoting the pomegranate industry’s development worldwide. However, little information on pomegranates grown in China is available. Morphological and chemical characterizations of fruits and arils from 20 pomegranate cultivars in six regions of China were investigated. Combined with overall scores by principal component analysis, ‘Yushiliu No. 1’, ‘Taishanhong No. 2’, ‘Tunisia’ and ‘Mollar’ were promising cultivars, and Chinese researchers bred the first two. It was surprising that ‘Mollar’ had bigger fruit size and more aril moisture grown in China than in Spain. Cultivars with higher anthocyanin content in arils were ‘Turkey’, ‘Moyu’ and ‘Red Angel’, which might be used as the source of natural red food colourants. While red husk ‘Hongruyi’ and ‘Hongshuangxi’ with higher vitamin C, aril moisture and lower titratable acid in arils, might also be promising cultivars for further various utilization. Furthermore, the comparison of ‘Tunisia’ fruits from four regions revealed that cultivation locations had more influence on fruit traits than genotypes. Maturity index classification was established for Chinese pomegranate cultivars. Therefore, the results would provide a valuable guide for agricultural cultivation, industrial utilization, and breeding.
文摘Objective: To assess the ameliorative properties of Iranian Trigonella foenum-graecum L.(T. foenum-graecum) seeds and Punica granatum L.(P. granatum) peel extracts against streptozotocin-induced diabetes in male guinea pigs.Methods: Sixty guinea pigs were divided into six groups(10 guinea pigs per group).Group 1 consisted of normal animals. Groups 2 and 3 were treated with Iranian T. foenum-graecum seeds and P. granatum peel extract alone, respectively. Group 4 was treated with streptozotocin only; whereas Groups 5 and 6 receiving streptozotocin were treated with Iranian T. foenum-graecum seeds and P. granatum peel extract, respectively.All animals were treated for 30 days, and the body weight, blood and liver biochemical parameters were measured.Results: Guinea pigs exposed to streptozotocin showed an alteration in body weight gain, fasting glucose level, kidney function parameters(blood urea nitrogen and creatinine) as well as decreased serum and hepatic total protein level. In addition, it increased the cholesterol and triglyceride level, while decreasing the hepatic glucose-6 phosphate dehydrogenase activity, glycogen, glutathione content and hepatic catalase activity. Oral treatment with T. foenum-graecum seeds and P. granatum peel extracts revealed significant protective properties with respect to body weight gain and other biochemical parameters studied.Conclusions: The Iranian T. foenum-graecum seeds and P. granatum peel extracts are significantly potent in ameliorating diabetic condition induced by streptozotocin and improving various biochemical parameters in serum and liver of guinea pigs.
