Plant Science Center Plant Morphogenesis and Biochemistry Laboratory Postgraduate Program in Plant Genetic Resources Federal University of Santa Catarina Rodovia Admar Gonzaga 1346 CEP 88.034-001 Florianópolis SC Brazil.
Santa Catarina State Agricultural Research and Rural Extension Agency (EPAGRI) Experimental Station of Urussanga (EEUR) Rd. SC 446 Km 19 S/N Urussanga Florianópolis SC CEP 88840-000 Brazil.
Food Sci Nutr. 2015 Oct 26;4(3):409-22. doi: 10.1002/fsn3.303. eCollection 2016 May.
Food losses can occur during production, postharvest, and processing stages in the supply chain. With the onset of worldwide food shortages, interest in reducing postharvest losses in cassava has been increasing. In this research, the main goal was to evaluate biochemical changes and identify the metabolites involved in the deterioration of cassava roots. We found that high levels of ascorbic acid (AsA), polyphenol oxidase (PPO), dry matter, and proteins are correlated with overall lower rates of deterioration. On the other hand, soluble sugars such as glucose and fructose, as well as organic acids, mainly, succinic acid, seem to be upregulated during storage and may play a role in the deterioration of cassava roots. Cultivar Branco (BRA) was most resilient to postharvest physiological deterioration (PPD), while Oriental (ORI) was the most susceptible. Our findings suggest that PPO, AsA, and proteins may play a distinct role in PPD delay.
在供应链的生产、收获后和加工阶段都可能发生食物损失。随着全球粮食短缺的出现，人们对减少木薯收获后损失的兴趣日益增加。在这项研究中，主要目标是评估生化变化并确定与木薯根恶化相关的代谢物。我们发现，较高水平的抗坏血酸（AsA）、多酚氧化酶（PPO）、干物质和蛋白质与整体较低的恶化率相关。另一方面，葡萄糖和果糖等可溶性糖以及主要是琥珀酸等有机酸似乎在储存过程中上调，可能在木薯根的恶化中起作用。品种 Branco（BRA）对收获后生理恶化（PPD）的抵抗力最强，而 Oriental（ORI）则最敏感。我们的研究结果表明，PPO、AsA 和蛋白质可能在 PPD 延迟中发挥独特作用。
