PDF(Pubmed)
Abstract：
BACKGROUND: In Ghana, Corchorus olitorius, Solanum macrocarpon and Amaranthus cruentus are green leafy vegetables that are customarily eaten together with a starchy staple food. The present study aimed at assessing the ethanolic leaf extract of C. olitorius, S. macrocarpon and A. cruentus for antioxidant capacity, phytochemical property, nutritional and anti-nutrient content.
METHODS: Phytochemical constituent and proximate analysis were determined using standard protocols. The DPPH scavenging activity was used to determine the antioxidant activity of the ethanolic leaf extracts from the three vegetables. The antinutrients phytate and oxalate were determined by titrimetric methods of analysis.
RESULTS: Pytochemical screening revealed the presence of tannins and flavonoids in C. olitorius, S. macrocarpon and A. cruentus. Alkaloids and saponins were present in C. olitorius and S. macrocarpon but not in A. cruentus. Terpenoids, steroids, carotenoids and coumarins were absent in all the three vegetables. Proximate analysis revealed varying levels of moisture, fat, protein, ash, crude fibre and carbohydrates in the three leafy vegetables. The DPPH scavenging showed 86.71%, 71.72% and 38.86% activity for S. macrocarpon, C. olitorius and A. cruentus respectively. The antinutrient results revealed an oxalate level of 2.7 ± 0.13% for C. olitorius, 6.43 ± 0.06% for A. cruentus and 12.32 ± 0.13% for S. macrocarpon. For levels of phytates, our results revealed a 3.084 ± 0.54%, 1.14 ± 0.26% and 1.71 ± 0.27% for C. olitorius, A. cruentus and S. macrocarpon, respectively.
CONCLUSIONS: The current study has shown that C. olitorius, A. cruentus and S. macrocarpon possess important phytochemicals, nutrients and significant antioxidant activity, suggesting a potential of these vegetables against diverse disease, if eaten by humans.
METHODS: Phytochemical constituent and proximate analysis were determined using standard protocols. The DPPH scavenging activity was used to determine the antioxidant activity of the ethanolic leaf extracts from the three vegetables. The antinutrients phytate and oxalate were determined by titrimetric methods of analysis.
RESULTS: Pytochemical screening revealed the presence of tannins and flavonoids in C. olitorius, S. macrocarpon and A. cruentus. Alkaloids and saponins were present in C. olitorius and S. macrocarpon but not in A. cruentus. Terpenoids, steroids, carotenoids and coumarins were absent in all the three vegetables. Proximate analysis revealed varying levels of moisture, fat, protein, ash, crude fibre and carbohydrates in the three leafy vegetables. The DPPH scavenging showed 86.71%, 71.72% and 38.86% activity for S. macrocarpon, C. olitorius and A. cruentus respectively. The antinutrient results revealed an oxalate level of 2.7 ± 0.13% for C. olitorius, 6.43 ± 0.06% for A. cruentus and 12.32 ± 0.13% for S. macrocarpon. For levels of phytates, our results revealed a 3.084 ± 0.54%, 1.14 ± 0.26% and 1.71 ± 0.27% for C. olitorius, A. cruentus and S. macrocarpon, respectively.
CONCLUSIONS: The current study has shown that C. olitorius, A. cruentus and S. macrocarpon possess important phytochemicals, nutrients and significant antioxidant activity, suggesting a potential of these vegetables against diverse disease, if eaten by humans.
摘要：
背景：在加纳，Corchorusolitorius,龙葵和A菜是绿叶蔬菜，通常与淀粉主食一起食用。本研究旨在评估C.olitorius的乙醇叶提取物，S.macrocarpon和A.cruentus的抗氧化能力，植物化学性质，营养和抗营养素含量。
方法:使用标准方案确定植物化学成分和近似分析。使用DPPH清除活性来确定来自三种蔬菜的乙醇叶提取物的抗氧化活性。通过滴定法分析测定了抗营养素的植酸盐和草酸盐。
结果：Pytochemicalscreening显示，在C.olitorius中存在单宁和类黄酮，S、大卡蓬和A.Cruentus。生物碱和皂苷存在于奥氏梭菌和大碳梭菌中，但不存在于A.cruentus中。萜类化合物,类固醇,这三种蔬菜中都没有类胡萝卜素和香豆素。近似分析显示不同水平的水分，脂肪，蛋白质，灰,三种叶类蔬菜中的粗纤维和碳水化合物。DPPH清除率显示为86.71％，大鱼活度为71.72%和38.86%，分别是olitorius和A.cruentus。抗营养结果显示，奥利托氏菌的草酸盐水平为2.7±0.13%，A.cruentus为6.43±0.06％，S.macrocarpon为12.32±0.13％。对于植酸水平，我们的结果显示3.084±0.54%，1.14±0.26%和1.71±0.27%。A.Cruentus和S.macrocarpon，分别。
结论：目前的研究表明，A.cruentus和S.macrocarpon具有重要的植物化学物质，营养和显著的抗氧化活性，表明这些蔬菜具有对抗多种疾病的潜力，如果被人类吃掉。
方法:使用标准方案确定植物化学成分和近似分析。使用DPPH清除活性来确定来自三种蔬菜的乙醇叶提取物的抗氧化活性。通过滴定法分析测定了抗营养素的植酸盐和草酸盐。
结果：Pytochemicalscreening显示，在C.olitorius中存在单宁和类黄酮，S、大卡蓬和A.Cruentus。生物碱和皂苷存在于奥氏梭菌和大碳梭菌中，但不存在于A.cruentus中。萜类化合物,类固醇,这三种蔬菜中都没有类胡萝卜素和香豆素。近似分析显示不同水平的水分，脂肪，蛋白质，灰,三种叶类蔬菜中的粗纤维和碳水化合物。DPPH清除率显示为86.71％，大鱼活度为71.72%和38.86%，分别是olitorius和A.cruentus。抗营养结果显示，奥利托氏菌的草酸盐水平为2.7±0.13%，A.cruentus为6.43±0.06％，S.macrocarpon为12.32±0.13％。对于植酸水平，我们的结果显示3.084±0.54%，1.14±0.26%和1.71±0.27%。A.Cruentus和S.macrocarpon，分别。
结论：目前的研究表明，A.cruentus和S.macrocarpon具有重要的植物化学物质，营养和显著的抗氧化活性，表明这些蔬菜具有对抗多种疾病的潜力，如果被人类吃掉。
