Investigating the impact of cracking and size on quality changes in jujube during on-tree drying

IF 4.2 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-09-01 DOI:10.1016/j.scienta.2025.114399

Chao Xu , Jiale Guo , Qiaonan Yang , Xiaokang Yi , Can Hu , Haoran Wu , Jie Li

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引用次数: 0

Abstract

Large fruit size variation and high cracking rates constrain the development of China's jujube industry. To investigate the impact of fruit size and cracking on quality, four types of jujubes were examined: large uncracked (DW), small uncracked (XW), large cracked (DL), and small cracked (XL). Using pre-marking and equal-time sampling, we monitored changes in cracking and quality indicators during on-tree drying. Results indicated no significant increase in cracking rate (P > 0.05), but initial moisture content differed significantly among the four types (P < 0.05). The drying process exhibited a decelerating trend, with hardness initially decreasing and then increasing due to moisture changes. Soluble solids, titratable acid, ascorbic acid, total flavonoids, and total phenolic content all decreased during air-drying. However, reducing sugar content increased significantly in uncracked jujubes (P < 0.05), suggesting that both cracking and fruit size influence quality changes. Comprehensive evaluation revealed that uncracked jujubes scored higher in later stages of on-tree drying, while cracked jujubes had the lowest scores. These findings indicate that tree-based air-drying enhances jujube quality, but cracked jujubes are more suitable for early harvesting and processing.

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研究枣树上干燥过程中开裂和大小对枣树品质变化的影响

果实大小变化大，裂化率高，制约着中国枣业的发展。为了研究果实大小和开裂对品质的影响，以大枣（DW）、小枣（XW）、大枣（DL）和小枣（XL） 4种枣为研究对象。利用预标记和等时间采样，我们监测了树上干燥过程中开裂和质量指标的变化。结果表明，四种类型的裂缝率无显著增加（P > 0.05），但初始含水率在四种类型之间差异显著（P < 0.05）。干燥过程中，由于水分的变化，硬度呈现先减小后增大的趋势。可溶固形物、可滴定酸、抗坏血酸、总黄酮和总酚含量均在风干过程中降低。未裂枣还原糖含量显著增加（P < 0.05），说明裂枣和果实大小对品质变化均有影响。综合评价表明，未开裂枣树在树上干燥后期得分较高，而开裂枣树在树上干燥后期得分最低。上述结果表明，树基风干能提高枣树品质，但裂口枣树更适合早期采收和加工。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientia Horticulturae 农林科学-园艺

CiteScore

8.60

自引率

4.70%

发文量

796

审稿时长

47 days

期刊介绍： Scientia Horticulturae is an international journal publishing research related to horticultural crops. Articles in the journal deal with open or protected production of vegetables, fruits, edible fungi and ornamentals under temperate, subtropical and tropical conditions. Papers in related areas (biochemistry, micropropagation, soil science, plant breeding, plant physiology, phytopathology, etc.) are considered, if they contain information of direct significance to horticulture. Papers on the technical aspects of horticulture (engineering, crop processing, storage, transport etc.) are accepted for publication only if they relate directly to the living product. In the case of plantation crops, those yielding a product that may be used fresh (e.g. tropical vegetables, citrus, bananas, and other fruits) will be considered, while those papers describing the processing of the product (e.g. rubber, tobacco, and quinine) will not. The scope of the journal includes all horticultural crops but does not include speciality crops such as, medicinal crops or forestry crops, such as bamboo. Basic molecular studies without any direct application in horticulture will not be considered for this journal.