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Nutritional, phytochemical, antioxidant, α-glucosidase and α-amylase inhibitory properties of Moringa oleifera seeds
South African Journal of Botany ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.sajb.2020.07.021
Xinzhe Gu , Ying Yang , Zhengwu Wang

Abstract The aim of this study was to analyze nutritional characteristics of Moringa oleifera seed and evaluate phytochemical compounds, as well as antioxidant and enzyme inhibitory activities, of such seeds. Results demonstrated that seed protein possessed 23.77% of indispensable amino acids, but lysine was the first limiting amino acid. Seed oil contained 78.44% of unsaturated fatty acids, with oleic acid (C18:1) greater than 70%. And seeds were rich in mineral elements, especially being a good source of Ca in the human diet. In addition, total saponins (146.92–169.82 mg GEs/g), total phenolics (37.07–40.75 mg GAEs/g), total flavonoids (6.85–8.43 mg REs/g), and condensed tannins contents (2.74–5.28 mg CEs/g) were identified in different extracts of Moringa oleifera seed. Seed extracts exhibited good antioxidant activities as assessed by different in vitro assays, including 2,2-azino-bis-3-ethylbenzothiazloine-6-sulfonic acid (ABTS), 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity, and ferric reducing antioxidant power assays. The α-glucosidase and α-amylase inhibitory activity were also investigated. Furthermore, ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was utilized to characterize the bioactive components in seed extracts. Thirty-three compounds were identified, mainly consisting of glucosides, phenolics (and derivatives), and flavonoids (and derivatives).

中文翻译:

辣木种子的营养、植物化学、抗氧化、α-葡萄糖苷酶和α-淀粉酶抑制特性

摘要 本研究的目的是分析辣木种子的营养特性,评估这些种子的植物化学成分以及抗氧化和酶抑制活性。结果表明,种子蛋白含有23.77%的必需氨基酸,但赖氨酸为第一限制性氨基酸。种子油含有78.44%的不饱和脂肪酸,油酸(C18:1)大于70%。种子富含矿物质元素,尤其是人类饮食中钙的良好来源。此外,总皂苷(146.92–169.82 mg GEs/g)、总酚类(37.07–40.75 mg GAEs/g)、总黄酮(6.85–8.43 mg REs/g)和缩合单宁含量(2.74–5.28 mg CEs/g) g) 在辣木种子的不同提取物中鉴定出。种子提取物表现出良好的抗氧化活性,通过不同的体外试验评估,包括 2,2-azino-bis-3-ethylbenzothiazloine-6-sulfonic acid (ABTS)、2,2-Diphenyl-1-picrylhydrazyl (DPPH) 自由基清除能力和铁还原抗氧化能力测定。还研究了α-葡萄糖苷酶和α-淀粉酶抑制活性。此外,利用超高效液相色谱结合四极杆飞行时间质谱 (UPLC-Q-TOF-MS) 来表征种子提取物中的生物活性成分。确定了 33 种化合物,主要由糖苷、酚类(和衍生物)和黄酮类(和衍生物)组成。和铁还原抗氧化能力测定。还研究了α-葡萄糖苷酶和α-淀粉酶抑制活性。此外,利用超高效液相色谱结合四极杆飞行时间质谱 (UPLC-Q-TOF-MS) 来表征种子提取物中的生物活性成分。确定了 33 种化合物,主要由糖苷、酚类(和衍生物)和黄酮类(和衍生物)组成。和铁还原抗氧化能力测定。还研究了α-葡萄糖苷酶和α-淀粉酶抑制活性。此外,利用超高效液相色谱结合四极杆飞行时间质谱 (UPLC-Q-TOF-MS) 来表征种子提取物中的生物活性成分。确定了 33 种化合物,主要由糖苷、酚类(和衍生物)和黄酮类(和衍生物)组成。
更新日期:2020-09-01
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