LED持续光照处理对甜瓜贮藏特性及糖代谢的影响

doi:10.6048/j.issn.1001-4330.2023.07.015

摘要/Abstract

摘要：

【目的】分析LED单色光对甜瓜贮藏期贮藏特性及糖分含量的影响,研发甜瓜采后保鲜新技术。【方法】以甜瓜品种西州密25号为试材,在7℃条件下分别采用发光二极管(LED,light emitting diode)红、蓝、白单色弱光(30 lx)持续照射,研究LED红、蓝、白单色弱光对甜瓜采后贮藏过程中贮藏特性及糖分含量的影响。【结果】LED以白色光在减少腐烂发生、延缓硬度下降效果最好,红色光在保持甜瓜果皮颜色上效果最好;LED光照处理组对甜瓜的可溶性固形物含量保持上较为明显,LED光照处理组延缓了甜瓜贮藏中后期果肉中蔗糖、葡萄糖、果糖的降解速率。其中白色光对保持甜瓜贮藏期糖分含量上效果最明显。【结论】LED持续光照处理延缓了可溶性固形物含量下降和贮藏前期失重率的下降,保持了甜瓜果皮颜色,减少了腐烂发生,延缓了果肉硬度的下降。

关键词: 甜瓜; LED; 贮藏特性; 果糖; 蔗糖

Abstract:

【Objective】 In order to study the effect of LED monochromatic light on the storage characteristics and sugar content of muskmelon during storage and to develop a new technology for postharvest preservation of muskmelon.【Methods】 The melon variety Xizhoumi25 was used as material, the effects of low light intensity of red, blue and white light-emitting diode on storage characteristics and sugar content of postharvest muskmelon were studied at 7 ℃ cryostat. 【Results】 LED of white light had the best effect on reducing rot and delay the decrease of hardness, and red light had the best effect on keeping the color of melon peel;it was found that the degradation rate of sucrose, glucose and sucrose in muskmelon flesh was delayed in the middle and late stage of storage by LED light treatment, according to the analysis of fructose, fructose and glucose in flesh by High-performance liquid chromatography. White light had the best effect on the sugar content of muskmelon during storage. 【Conclusion】 The results showed that LED delayed the decline of soluble solids content, and weight loss rate, kept the color of melon peel, reduced rot and delayed the decrease of pulp hardness.LED continuous illumination treatment has a significant effect on the preservation and sugar quality maintenance of muskmelon during storage.

Key words: muskmelon; LED; storage properties; fructose; sucrose

中图分类号:

S652

姚军, 郑贺云, 张翠环, 再吐娜·买买提, 耿新丽. LED持续光照处理对甜瓜贮藏特性及糖代谢的影响[J]. 新疆农业科学, 2023, 60(7): 1689-1697.

YAO Jun, ZHENG Heyun, ZHANG Cuihuan, Zaituna Maimaiti, GENG Xinli. Effects of continuous illumination with LED on storage characteristics and sugar metabolism of muskmelon[J]. Xinjiang Agricultural Sciences, 2023, 60(7): 1689-1697.

图/表 10

表1 糖质量浓度与HPLC 峰面积的回归方程和相关系数

Tab.1 Regression equation and correlation coefficient between sugar concentration and HPLC peak area

组分 Compo nent	线性回归方程 Linear regression equation	相关系数(R²) Correlation
葡萄糖 Glucose	Y=78 051X-347.07	0.999 8
果糖 fructose	Y=159 917X+5 857.50	0.999 6
蔗糖 sucrose	Y=180 892X+8 002.90	0.999 5

图1 LED持续光照处理下甜瓜贮藏期可溶性固形物变化

Fig.1 Effect of LED continuous illumination on soluble solids in muskmelon during storage

图2 LED持续光照处理下甜瓜贮藏期失重率变化

Fig.2 Effect of LED continuous illumination on weight loss rate in muskmelon during storage

图3 LED持续光照处理下甜瓜贮藏期L值和a/b值变化

Fig.3 Effect of LED continuous illumination on L and a/b values in muskmelon during storage

图4 LED持续光照处理下甜瓜贮藏期腐烂率变化

Fig.4 Effect of LED continuous illumination on decay rate in muskmelon during storage

图5 LED持续光照处理下甜瓜贮藏期果肉硬度变化

Fig.5 Effect of LED continuous illumination on pulp hardness in muskmelon during storage

图6 LED持续光照处理下甜瓜贮藏期蔗糖含量变化

Fig.6 Effect of LED continuous illumination on sucrose content in muskmelon during storage

图7 LED持续光照处理下甜瓜贮藏期果糖含量变化

Fig.7 Effect of LED continuous illumination on fructose content in muskmelon during storage

图8 LED持续光照处理下甜瓜贮藏期葡萄糖含量变化

Fig.8 Effect of LED continuous illumination on glucose content in muskmelon during storage

图9 LED持续光照处理下甜瓜贮藏期甜度值变化

Fig.9 Effect of LED continuous illumination on sweetness content in muskmelon during storage

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