Malviya Shalini, Jha Alok, Hettiarachchy Navam
Centre of Bioscience and Biotechnology, Banasthali University, Newai, 304 022 India.
Centre of Food Science and Technology, Banaras Hindu University, Varanasi, 221 005 India.
J Food Sci Technol. 2014 Dec;51(12):4132-7. doi: 10.1007/s13197-013-0956-4. Epub 2013 Feb 22.
Pomegranate peels of Ganesh variety were subjected to extraction using different solvents viz. water, methanol and ethanol either alone or in combination with water. The extraction yield, antioxidant activity (DPPH and ABTS inhibition) and total phenolic contents were evaluated. Highest yield was obtained from 50 % ethanol: 50 % water (16.3 ± 1.99 %). The DPPH and ABTS inhibition activity was found to be the highest for methanol and 70 % ethanol: 30 % water extract (79.5 ± 6.5; 94.6 ± 6.10), respectively. The phenolic content was the highest in the aqueous extract (438.3 ± 14.15). The antibacterial activity of peel extracts was tested against four bacterial strains, Staphylococcus aureus, Enterobacter aerogenes, Salmonella typhi and Klebsiella pneumoniae and the extracts demonstrated remarkable antibacterial activities against all the tested bacterial strains. The 70 % ethanol: 30 % water and 100 % water extract had a higher antioxidant activity and phenolic content and has the potential for nutraceutical application.
对甘尼什品种的石榴皮使用不同溶剂进行提取，即单独使用水、甲醇和乙醇，或与水混合使用。评估了提取率、抗氧化活性（DPPH和ABTS抑制率）以及总酚含量。50%乙醇:50%水的提取率最高（16.3±1.99%）。甲醇以及70%乙醇:30%水提取物的DPPH和ABTS抑制活性分别最高（79.5±6.5；94.6±6.10）。水提取物中的酚含量最高（438.3±14.15）。测试了果皮提取物对四种细菌菌株金黄色葡萄球菌、产气肠杆菌、伤寒沙门氏菌和肺炎克雷伯菌的抗菌活性，提取物对所有测试细菌菌株均表现出显著的抗菌活性。70%乙醇:30%水和100%水提取物具有较高的抗氧化活性和酚含量，具有用于营养保健品的潜力。
