Zhang Jingzhen, Wang Chenxin, Xie Yulu, Xu Ping, Xu Ximing, Pang Linjiang, Lv Zunfu, Lu Guoquan
Institute of Root and Tuber Crops, The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China.
College of Food and Health, Zhejiang A&F University, Hangzhou 311300, China.
Food Chem X. 2025 Mar 26;27:102418. doi: 10.1016/j.fochx.2025.102418. eCollection 2025 Apr.
During harvesting and transportation, sweetpotatoes often suffer from mechanical damage like extrusion and collision, which affects their marketability and revenue. This study found that bruising significantly impacted sweetpotatoes quality, especially hardness, which decreased by 21.08 % under 180 N force at 6 d compared to control. Increased extrusion forces led to cellular destruction, higher porosity, starch aggregation, and weight loss rate. Meanwhile, the antioxidant enzyme activities decreased and cell wall degrading enzyme activities increased. A total of 24 and 35 kinds of volatile organic compounds were identified by gas chromatography-mass spectrometry and gas chromatography-ion mobility spectrometry, respectively. Notably, alcohols, aldehydes, and ketones changed more significantly than others following extrusion. The content of β-ionone increased with higher forces, while 1-octen-3-ol decreased, suggesting they may serve as indicators of bruised sweetpotatoes during storage. This research enhances understanding of damaged sweetpotatoes and aids in developing advanced nondestructive testing techniques.
在收获和运输过程中，甘薯经常遭受挤压和碰撞等机械损伤，这会影响其市场价值和收益。本研究发现，擦伤对甘薯品质有显著影响，尤其是硬度，在6天时，180牛力作用下的甘薯硬度相比对照降低了21.08%。挤压力增加会导致细胞破坏、孔隙率升高、淀粉聚集和失重率增加。同时，抗氧化酶活性降低，细胞壁降解酶活性增加。分别通过气相色谱-质谱联用仪和气相色谱-离子迁移谱仪鉴定出了24种和35种挥发性有机化合物。值得注意的是，挤压后醇类、醛类和酮类的变化比其他物质更为显著。随着压力增大，β-紫罗兰酮含量增加，而1-辛烯-3-醇含量降低，这表明它们可能作为贮藏期间擦伤甘薯的指标。本研究增进了对受损甘薯的了解，并有助于开发先进的无损检测技术。
