Wang Yongxu, Zhang Jing, Wang Xinjie, Zhang Tingting, Zhang Fujun, Zhang Shuai, Li Yuanyuan, Gao Wensheng, You Chunxiang, Wang Xiaofei, Yu Kun
Xinjiang Production and Construction Corps Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization, Department of Horticulture, College of Agriculture, Shihezi University, Shihezi, China.
National Key Laboratory of Crop Biology, MOA Key Laboratory of Horticultural Crop Biology and Germplasm Innovation, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, China.
Front Nutr. 2022 May 13;9:881783. doi: 10.3389/fnut.2022.881783. eCollection 2022.
To prolong the shelf life of perishable food with a simple and environmentally friendly postharvest preservation technology is one of the global concerns. This study aimed to explore the application value of biological macromolecule natural cellulose nanofibers (CNFs) in extending the postharvest fruit shelf life. In this study, 0.5% (wt%) CNFs were prepared from natural wood and coated on the surface of early-ripening apple fruits. After 10 days of storage at room temperature, the results revealed that the shelf life of apple fruits with CNF coating was significantly prolonged, and the fruit appearance quality improved. The invisible network structure of CNFs in the fruit epidermis was observed under an atomic force microscope (AFM). The gas chromatography and mass spectrometry (GC-MS) analysis showed that CNFs significantly promoted the formation of epidermal wax, especially fatty alcohols, during storage. In addition, the CNFs remarkably promoted the upregulation of genes related to the synthesis of cuticular wax of apple. In conclusion, this study provides an environmentally sustainable nanomaterial for post-harvest preservation of horticultural products, and also provides a new insight into the effect of CNFs on postharvest storage of apple fruits.
利用简单且环保的采后保鲜技术延长易腐食品的货架期是全球关注的问题之一。本研究旨在探索生物大分子天然纤维素纳米纤维（CNFs）在延长采后果实货架期方面的应用价值。在本研究中，由天然木材制备了0.5%（重量）的CNFs，并将其涂覆在早熟苹果果实表面。在室温下储存10天后，结果表明，涂覆CNFs的苹果果实货架期显著延长，果实外观品质得到改善。在原子力显微镜（AFM）下观察到果实表皮中CNFs的不可见网络结构。气相色谱-质谱联用（GC-MS）分析表明，CNFs在储存期间显著促进了表皮蜡质的形成，尤其是脂肪醇。此外，CNFs显著促进了苹果角质蜡合成相关基因的上调。总之，本研究为园艺产品采后保鲜提供了一种环境可持续的纳米材料，也为CNFs对苹果果实采后贮藏的影响提供了新的见解。
