Saleem Muhammad Shahzad, Ejaz Shaghef, Anjum Muhammad Akbar, Ali Sajid, Hussain Sajjad, Nawaz Aamir, Naz Safina, Maqbool Mehdi, Abbas Abdul Manan
Department of Horticulture, Bahauddin Zakariya University, 60800 Multan, Pakistan.
Department of Horticulture, University of Poonch, 12350 Rawalakot, Pakistan.
J Food Sci Technol. 2022 Aug;59(8):3296-3306. doi: 10.1007/s13197-022-05412-5. Epub 2022 Mar 12.
The effect of a (AV) gel coating was studied on antioxidant enzymes activities, oxidative stress, softening and associated quality attributes of persimmon fruits. The fruits were coated with 0 and 50% AV-gel coating and stored for 20 days at 20 ± 1 ºC. AV-gel coated fruits exhibited considerably less weight loss, hydrogen peroxide level, electrolyte leakage and malondialdehyde content. AV-gel coated fruits had significantly higher ascorbate peroxidase, peroxidase, superoxide dismutase and catalase activities. In addition, AV-gel coating suppressed pectin methylesterase, polygalacturonase and cellulase activities and showed higher ascorbic acid, DPPH scavenging antioxidants and phenolics, and lower sugars and carotenoids. To the best of our knowledge, these results are the first evidence that AV-gel coating modulates the activities of cell wall degrading enzymes to delay ripening in climacteric fruits. So, AV-gel coating prohibited the onset of senescence by activating enzymatic antioxidant system, accumulating bioactive compounds and suppressing cell wall degradation.
The online version contains supplementary material available at 10.1007/s13197-022-05412-5.
研究了一种（AV）凝胶涂层对柿果抗氧化酶活性、氧化应激、软化及相关品质属性的影响。果实分别用0%和50%的AV凝胶涂层处理，并在20±1℃下贮藏20天。AV凝胶涂层处理的果实重量损失、过氧化氢水平、电解质渗漏和丙二醛含量显著降低。AV凝胶涂层处理的果实抗坏血酸过氧化物酶、过氧化物酶、超氧化物歧化酶和过氧化氢酶活性显著更高。此外，AV凝胶涂层抑制了果胶甲酯酶、多聚半乳糖醛酸酶和纤维素酶的活性，表现出更高的抗坏血酸、DPPH清除抗氧化剂和酚类物质，以及更低的糖分和类胡萝卜素。据我们所知，这些结果首次证明AV凝胶涂层可调节细胞壁降解酶的活性，从而延缓跃变型果实的成熟。因此，AV凝胶涂层通过激活酶促抗氧化系统、积累生物活性化合物和抑制细胞壁降解来阻止衰老的发生。
在线版本包含可在10.1007/s13197-022-05412-5获取的补充材料。
