Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA.
Food Chem. 2012 Nov 15;135(2):694-8. doi: 10.1016/j.foodchem.2012.05.022. Epub 2012 May 11.
The effect of harvest date on nutritional compounds and antioxidant activity (AOC) in avocado (Persea americana Mill. cv Hass) fruit during storage was determined. The fruits were harvested at seven different dates and ripened at 25 °C following 21 or 35 days of cold storage. The results indicated that the phenolic and glutathione contents were increased and the ascorbic acid content was not significantly different in early harvested fruit (January to March), and the phenolic, ascorbic acid and glutathione contents were increased slightly and then decreased on late harvested fruit (April to June). Similar trends were observed in the changes of AOC. Furthermore, AOC in early harvested fruit after storage for 35 days was much higher than that in late harvested fruit after storage for 21 days. Therefore, avocado can be harvested earlier for economic benefits according to the market and can keep high nutritional value for human health benefits.
本研究旨在探讨采后不同时间对鳄梨（Persea americana Mill. cv Hass）果实贮藏过程中营养成分和抗氧化活性（AOC）的影响。果实于 7 个不同的时间点采收，并在 21 或 35 天冷藏后于 25°C 下催熟。结果表明，早采（1 月至 3 月）的果实中酚类物质和谷胱甘肽含量增加，抗坏血酸含量无显著差异，而晚采（4 月至 6 月）的果实中酚类物质、抗坏血酸和谷胱甘肽含量先略有增加后下降。AOC 的变化也呈现出类似的趋势。此外，贮藏 35 天后早采果实的 AOC 明显高于贮藏 21 天后晚采果实的 AOC。因此，根据市场情况，鳄梨可以提前采收以获得经济效益，同时保持对人体健康有益的高营养价值。
