Proximate analysis of fruits and vegetables wastes from Nairobi County, Kenya

Research Journal of Food Science and Nutrition Pub Date : 2020-02-28 DOI:10.31248/RJFSN2019.088

J. Kamau, F. Mwaura, J. Mwaniki, D. Mbui

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引用次数: 5

Abstract

Proximate analysis of twenty fruits and vegetable waste from Nairobi County was evaluated. They were obtained from Kangemi and Wakulima markets. Standard procedures were used for the analysis of crude fat, protein, fiber, carbohydrates, moisture, ash, nitrogen-free extract and energy. The results obtained revealed that moisture content was in the range of 82.8 to 95.86% apart from sweet potato and banana which was 62.05 and 74.30% respectively. Protein range was between 0.57 to 3.49% with high-fat content being recorded in avocado at 9.03%. The ash content was highest in comfrey at 3.46% and lowest in mango at 0.44%. The carbohydrate level obtained by the difference method was lowest in courgette at 1.99% with crude fiber ranging from 0.69 to 2.73%. The total calculated energy ranged from 1.94 to 39.98 Kcal/100g. The macro-nutrient concentrations were 3.59 and 1.53% for potassium and calcium respectively. Lead, iron and zinc were detected at 15.1±3.6, 3742±235 and 176±11 ppm respectively. There is the presence of proximate properties in the edible portion of wasted fruits and vegetable and therefore, this study recommends proper fruits and vegetable handling during harvest, transportation, storage and marketing. Besides, the unavoidable waste should be used as biomass in energy production to deal with landfilling issues in the market places.

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肯尼亚内罗毕县水果和蔬菜废弃物的近似值分析

对内罗毕县的20种水果和蔬菜废弃物进行了近似分析。它们是从Kangemi和Wakulima市场获得的。采用标准程序对粗脂肪、蛋白质、纤维、碳水化合物、水分、灰分、无氮提取物和能量进行分析。结果表明，除甘薯和香蕉的水分含量分别为62.05和74.30%外，其余样品的水分含量均在82.8 ~ 95.86%之间。牛油果蛋白质含量在0.57 ~ 3.49%之间，脂肪含量高达9.03%。其中紫草灰分含量最高，为3.46%，芒果最低，为0.44%。差值法得到的碳水化合物含量最低，为1.99%，粗纤维含量为0.69 ~ 2.73%。总能量计算范围为1.94 ~ 39.98 Kcal/100g。钾和钙的常量养分浓度分别为3.59%和1.53%。铅、铁和锌分别为15.1±3.6、3742±235和176±11 ppm。在被浪费的水果和蔬菜的可食用部分存在近似特性，因此，本研究建议在收获、运输、储存和销售过程中适当处理水果和蔬菜。此外，不可避免的废物应用作生物质发电，以解决市场的堆填问题。

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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Research Journal of Food Science and Nutrition

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