Fatty acid, amino acid, mineral and antioxidant contents of acha (Digitaria exilis) grown on the Jos Plateau, Nigeria.

International journal of nutrition and metabolism Pub Date : 2013-01-01 Epub Date: 2013-01-31 DOI:10.5897/IJNAM13.0137

Robert H Glew, Emmanuel P Laabes, Jack M Presley, John Schulze, Ronnee Andrews, Yuan-Chen Wang, Yu-Chen Chang, Lu-Te Chuang

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Abstract

Digitaria exilis (Kippist) Stapf (also known as acha, hungry rice) has been cultivated for millennia in the dry savannahs of West Africa, but much remains to be learned about its nutritional properties. Acha was collected in four villages in Northern Nigeria and analyzed for fatty acids, minerals, amino acids and antioxidant content. Fatty acids accounted for 1.91% of the dry weight, with 47.4% linoleic acid and 30.5% oleic acid. The content of the essential minerals, copper, magnesium, molybdenum, zinc and calcium averaged 4.88, 1060, 0.23, 23.0 and 172 μg/g, respectively. The protein content was 6.53% and the essential amino acid pattern, except for lysine, compared favorably to a World Health Organization (WHO) reference protein. The total polyphenolic content of methanolic extracts of acha matched that of common cereals (for example, maize, rice, wheat) and the extracts contained substantial amounts of free-radical scavenging substances. Thus, acha is a source of many nutrients critical to human health.

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尼日利亚乔斯高原种植的阿茶（Digitaria exilis）的脂肪酸、氨基酸、矿物质和抗氧化剂含量。

Digitaria exilis (Kippist) Stapf（又称阿查，饥饿稻）在西非干旱的热带草原上已经种植了数千年，但人们对其营养特性仍有许多了解。我们在尼日利亚北部的四个村庄采集了阿查米，并对其脂肪酸、矿物质、氨基酸和抗氧化剂含量进行了分析。脂肪酸占干重的 1.91%，其中亚油酸占 47.4%，油酸占 30.5%。必需矿物质铜、镁、钼、锌和钙的平均含量分别为 4.88、1060、0.23、23.0 和 172 微克/克。蛋白质含量为 6.53%，除赖氨酸外，其必需氨基酸模式与世界卫生组织（WHO）的参考蛋白质相当。阿茶甲醇提取物的多酚总含量与普通谷物（如玉米、大米、小麦）相当，提取物中含有大量清除自由基的物质。因此，阿杂果是许多对人体健康至关重要的营养物质的来源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International journal of nutrition and metabolism

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