Chen Liping, Liu Yuhong, Zheng Weiran, Xu Dalun, Lu Baiyi, Sun Caixia
Huzhou Agricultural Science and Technology Development Center, Huzhou 313009, China.
Institute of Agro-product Safety & Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
ACS Omega. 2024 Mar 20;9(13):15134-15142. doi: 10.1021/acsomega.3c09444. eCollection 2024 Apr 2.
Wencheng waxy yam is famous for its glutinous and resilient taste, similar to waxy rice, but there is currently a lack of systematic research on the quality of this featured product, and little is known about its pesticide residues. We carried out a 2 year investigation of Wencheng waxy yam at seven sites from 2021 to 2022 to determine the oxidase content and phytochemical characteristics, namely, amylose, amylopectin, protein, reducing sugar, and mineral contents, such as K, Fe, and Zn, including the status of pesticide residues. The results showed that the oxidase content was affected by rainfall, and adequate water reduced the production of oxidase, including polyphenol oxidase, peroxidase, and superoxide dismutase, during the late growth stage of waxy yam, which was beneficial for reducing browning in yam processing. Radar map analysis showed that, with comprehensive evaluation, standardized production sites 1 and 2 had a relatively higher quality than 3-7 with small farmers. The results of pesticide multiresidue testing showed that no pesticides were detected in 64.29% of the samples, and the detected residues in the samples were very low, making the consumption of yam safe for consumers. These findings could be beneficial for the exploitation of the health benefits of waxy yam tubers and the innovation of yam-based functional products.
文成糯米山药以其软糯、有韧性的口感而闻名，类似糯米，但目前对这种特色产品的品质缺乏系统研究，对其农药残留情况也知之甚少。我们在2021年至2022年期间对七个地点的文成糯米山药进行了为期两年的调查，以确定其氧化酶含量和植物化学特性，即直链淀粉、支链淀粉、蛋白质、还原糖以及钾、铁和锌等矿物质含量，还包括农药残留状况。结果表明，氧化酶含量受降雨影响，充足的水分减少了糯米山药生长后期包括多酚氧化酶、过氧化物酶和超氧化物歧化酶在内的氧化酶产生，这有利于减少山药加工过程中的褐变。雷达图分析表明，综合评价来看，标准化生产基地1和2的品质相对高于小农户种植的3至7号地块。农药多残留检测结果显示，64.29%的样品未检出农药，且样品中检出的残留量极低，这使得消费者食用山药是安全的。这些发现可能有助于开发糯米山药块茎的健康益处以及创新以山药为基础的功能性产品。
