Department of Food Science and Technology, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
Institute of Chemical Technology, Ural Federal University, Named After the First President of Russia BN, Yeltsin, Yekaterinburg, Russia.
PLoS One. 2023 May 11;18(5):e0282974. doi: 10.1371/journal.pone.0282974. eCollection 2023.
White melon (Cucumeropsis mannii Naudin), is among common and yet underutilized oil seed crop within the West African region, does not have sufficient information specific to its nutrient composition for foreign consumers. To supplement existing information, therefore, we investigated the nutritional profile of defatted and full-fat flour, alongside physicochemical breakdown and storage performance of soxhlet-extracted oil from two white melon (C. mannii) seed varieties found in Southeast Nigeria. Nutritional profile involved the determinations of proximate composition, minerals, vitamins, functional properties as well as amino acid profile. Physicochemical breakdown involved the determinations of fatty acid profile, lipid breakdown parameters, as well as associated physical attributes. Results showed defatting of flours increased the protein (69.04%), carbohydrates (16.26%), crude fiber (2.68%), ash (11.9%), mineral (Na ranging from 223.92-246.99 mg/100g), and vitamin contents (Vit B1 ranging from 0.453-0.712 mg/100g). Total amino acid differed slightly when comparing miniature (30.36 g/100g) and large (22.36 g/100g) seeds. Soxhlet-extracted oil possessed low thiobarbituric acid, acid, and peroxide values (0.030 and 0.038 mg MDA/kg, 1.08 and 1.27 mg KOH/g, and 2.95 and 3,94 mEqO2/kg, for large and miniature seeds respectively), and peak linoleic acid (5 and 6.45 mg/ml, for miniature and large seeds respectively). During storage, the thiobarbituric acid and peroxide values of soxhlet-extracted oil increased yet within acceptable limits.
白皮白肉籽瓜，是西非地区一种常见但尚未得到充分利用的油料作物，针对其营养成分，针对外国消费者，目前还没有足够的具体信息。因此，为了补充现有信息，我们对在尼日利亚东南部发现的两种白皮白肉籽瓜(C. mannii)种子的脱脂和全脂面粉的营养成分、索氏提取油的理化分解和储存性能进行了研究。营养成分分析包括了对其基本成分、矿物质、维生素、功能特性以及氨基酸组成的测定。理化分解包括了对脂肪酸组成、脂质分解参数以及相关物理特性的测定。结果表明，面粉脱脂后，其蛋白质（69.04%）、碳水化合物（16.26%）、粗膳食纤维（2.68%）、灰分（11.9%）、矿物质（钠含量在 223.92-246.99mg/100g）和维生素含量（维生素 B1 含量在 0.453-0.712mg/100g）都有所增加。微型（30.36g/100g）和大型（22.36g/100g）种子的总氨基酸含量略有差异。索氏提取油的硫代巴比妥酸值、酸值和过氧化物值（大型和微型种子分别为 0.030 和 0.038mgMDA/kg、1.08 和 1.27mgKOH/g 以及 2.95 和 3.94mEqO2/kg）都较低，且亚油酸峰值（微型和大型种子分别为 5 和 6.45mg/ml）也较低。在储存过程中，索氏提取油的硫代巴比妥酸值和过氧化物值有所增加，但仍在可接受范围内。
