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食品研究与开发:2024,45(6):78-84
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黄曲霉对不同含水量新疆鲜食核桃活性氧代谢的影响
(1.新疆农业大学 食品科学与药学学院,新疆 乌鲁木齐 830052;2.新疆果品采后科学与技术重点实验室,新疆 乌鲁木齐 830052)
Effect of Aspergillus flavus on Reactive Oxygen Metabolism of Fresh Walnut with Different Water Content in Xinjiang
(1.School of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830052,Xinjiang,China;2.Xinjiang Key Laboratory of Fruit Post-Recovery Science and Technology,Urumqi 830052,Xinjiang,China)
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本文已被:浏览 389次   下载 385
投稿时间:2022-08-03    
中文摘要: 以新疆“新2”薄皮核桃为材料,无菌水接种为对照组,探究人工接种从自然霉变核桃上分离纯化出的黄曲霉菌后不同含水量的鲜食核桃活性氧代谢相关酶的变化规律。结果表明,不同含水量的鲜食核桃遭受到黄曲霉侵染后,在侵染前期,各含水量的鲜食核桃体内活性氧迅速累积,酶促清除系统被激活,不同的抗氧化酶为抵御病原微生物的侵染活性开始有明显的升高并达到峰值,但随着侵染时间的延长,酶促清除系统清除活性氧的能力减弱,活性氧的大量积累导致果实细胞膜结构被破坏,加快了其老化、腐烂。黄曲霉侵染含水量25%的鲜食核桃时,酶促清除系统的抗氧化酶活性明显高于其他含水量的鲜食核桃。
Abstract:This paper,with Xinjiang 'new 2' thin-skinned walnut as material and vaccinated sterile water as control group,explored the change pattern of enzymes related to reactive oxygen metabolism in fresh walnut with different water content after artificial inoculation of A.flavus from natural mildew walnut.The results showed that in the early stage of the infection,fresh walnut with different water content rapidly accumulated reactive oxygen species,and enzymatic clearance system was activated.Thus different antioxidant enzymes significantly increased and reached the peak to resist the pathogenic microorganisms.However,with the growth of infection time,the ability of the enzymatic clearance system decreased,and reactive oxygen species accumulated in a large amount,thereby destroying the cell membrane structure of the fruit as well as speeding up its aging and decay.When A.flavus infected fresh walnuts with 25% water content,the antioxidant enzyme activity of the enzymatic clearance system was significantly higher than that of fresh walnuts with other water content.
文章编号:202406011     中图分类号:    文献标志码:
基金项目:自治区高校科研计划自然科学项目
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