Singh Jatinder Pal, Kaur Amritpal, Shevkani Khetan, Singh Narpinder
Department of Food Science and Technology, Guru Nanak Dev University, Amritsar, Punjab 143005 India.
Department of Food Science and Technology, Guru Nanak Dev University, Amritsar, Punjab 143005 India ; Centre for Applied Agriculture, Central University of Punjab, Bathinda, 151001 India.
J Food Sci Technol. 2016 Nov;53(11):4056-4066. doi: 10.1007/s13197-016-2412-8. Epub 2016 Nov 25.
The present work was undertaken to evaluate the chemical composition (proximate, minerals and dietary fibre), colour parameters, antioxidant activity and polyphenol profiles of different fruits (pomegranate, kinnow, mango, banana, jambolan, grapes and sapodilla) and vegetables (beetroot, brinjal, orange carrot, bitter gourd, mentha and spinach). The amount of insoluble dietary fibre was higher than soluble dietary fibre for all fruits and vegetables. Vegetables showed superior mineral composition (higher amounts of K, Ca and Fe) as compared to fruits. Total phenolic content (TPC) and antioxidant activity (ABTS and DPPH) ranged from 354.9 to 1639.7 mg GAE/100 g, 2.6 to 5.5 and 3.0 to 6.3 mM TE/g, respectively for different fruits, while it ranged from 179.3 to 1028.6 mg GAE/100 g, 2.1 to 4.7 and 2.0 to 5.0 mM TE/g, respectively for different vegetables. Gallic acid, protocatechuic acid, catechin, caffeic acid, ferulic acid, sinapic acid, quercetin, resveratrol and kaempferol were detected and quantified in different fruits and vegetables. The results highlighted that fruit peels could be used as valuable sources of minerals and polyphenols having high antioxidant activity.
本研究旨在评估不同水果（石榴、金诺橘、芒果、香蕉、蒲桃、葡萄和人心果）和蔬菜（甜菜根、茄子、橙色胡萝卜、苦瓜、薄荷和菠菜）的化学成分（近似成分、矿物质和膳食纤维）、颜色参数、抗氧化活性和多酚谱。所有水果和蔬菜中不溶性膳食纤维的含量均高于可溶性膳食纤维。与水果相比，蔬菜显示出更优的矿物质组成（钾、钙和铁含量更高）。不同水果的总酚含量（TPC）和抗氧化活性（ABTS和DPPH）分别为354.9至1639.7毫克没食子酸当量/100克、2.6至5.5以及3.0至6.3毫摩尔 Trolox 当量/克，而不同蔬菜的上述指标分别为179.3至1028.6毫克没食子酸当量/100克、2.1至4.7以及2.0至5.0毫摩尔 Trolox 当量/克。在不同水果和蔬菜中检测并定量了没食子酸、原儿茶酸、儿茶素、咖啡酸、阿魏酸、芥子酸、槲皮素、白藜芦醇和山奈酚。结果表明，水果皮可作为具有高抗氧化活性的矿物质和多酚的宝贵来源。
