羧甲基壳聚糖涂膜对大久保桃保鲜及货架品质的影响

Effect of N,O- carboxymethyl chitosan coating on storage and shelf- life quality of Okubo Peach

以N，O羧甲基壳聚糖为主要涂膜材料对大久保桃进行保鲜实验，经0～1℃贮藏49d及20℃货架3d后研究果实的生理变化、冷害症状和感官品质。结果表明，与对照相比，涂膜处理能有效的维持桃果较低的呼吸强度，减少果实的腐烂和褐变，保持硬度和固酸比，减轻果肉组织伤害，降低果实冷敏感性，提高贮后品质。

Using N, O-carboxymethyl chitosan as the main component of preservative coating for Okubo Peach,the changes in physiological characteristics ,chilling injure symptoms and sensory quality were studied during storage -life at 0-1℃ for 49d and subsequent shelf-life at 20℃ for 3d.The results showed that N, O-carboxymethyl chitosan coating treatment could significantly maintain lower respiratory intensity, also inhibited fruit rot and flesh browning, kept firmness and the ratio of total soluble solids to total acid, alleviated the harm to flesh tissue and chilling-sensitivity, improved quality after storage in comparison with control sample.