Mitigating effects of chitosan coating on postharvest senescence and energy depletion of harvested pummelo fruit response to granulation stress

Chen, Chuying; Peng, Xuan; Chen, Jinyin; Gan, Zengyu; Wan, Chunpeng

doi:10.1016/j.foodchem.2021.129113

Cited by 34 publications

(30 citation statements)

References 39 publications

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Section: Methodsmentioning

confidence: 99%

“…To estimate the integrity of the cell membrane, electrolyte leakage was assayed as previously reported by Chen et al (6). About 20 10-mm-diameter discs from 10 fruits were rinsed in 40 ml of deionized water and then shaken at 25 • C. After 30 min, the initial electrolyte leakage was measured with the aid of a DDS-307A conductivity meter (Rex, Shanghai, China).…”

Section: Fruit Decay and Weight Lossmentioning

confidence: 99%

“…Although there are various causes for an increase in economic losses after harvest, the most important ones are the postharvest diseases caused by fungal infection as well as physiological damage (nutritional quality deterioration, oil spotting/oleocellosis, granulation, etc.) (3)(4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

“…Various edible coating films from polysaccharides have been studied for citrus fruit postharvest preservation. For example, the edible coating formulations based on Aloe vera gel ( 13 ), pea starch and guar gum ( 14 ), Persian gum ( 7 ), wax coating ( 15 ), carnauba wax ( 16 ), methylcellulose, carboxymethyl cellulose (CMC) and chitosan ( 6 , 17 ), hydroxypropyl methylcellulose ( 18 ), and sodium alginate (1.5%) with the Ficus hirta fruit extract ( 19 ), maintained fruit quality and extended postharvest storage-life of citrus fruit. Among the potential edible coatings, gum arabic (GA) could be a natural polysaccharide-based edible coating for the postharvest preservation of horticultural fruits.…”

Section: Introductionmentioning

confidence: 99%

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Gum Arabic Edible Coating Reduces Postharvest Decay and Alleviates Nutritional Quality Deterioration of Ponkan Fruit During Cold Storage

et al. 2021

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The storability recession during storage limits the postharvest storage life of Ponkan (Citrus reticulata Blanco cv. Ponkan) fruit and its nutritional value, which potentially lead to huge losses. To develop an effective technique to reduce Ponkan fruit postharvest decay and to maintain the nutritional quality, the preservation effect of 9, 12, and 15% postharvest gum arabic (GA) coatings on Ponkan fruit was investigated. The 12 and 15% GA coatings effectively reduced fruit decay as well as weight loss, retained higher total soluble solids (TSS) content, suppressed titratable acidity (TA) degradation, and postponed the rise in ripening index (RI). Moreover, the 12% GA-coated fruit exhibited a lower respiration rate, electrical conductivity, and malondialdehyde (MDA) accumulation than the uncoated (control) fruit. The 12% GA coating treatment decreased the loss of ascorbic acid (AsA), total phenols, and total flavonoids and maintained higher amounts of non-enzymatic antioxidants. Furthermore, the 12% GA coating treatment increased antioxidant enzymes' activities as well as delayed the reduction of total antioxidant capacity (TAC). These results suggest that, with the cold storage increasing time, the 12% GA-coated fruit exhibited better postharvest storability and higher nutritional quality than the control fruit. The GA coating treatment could be used as a commercial wax to improve postharvest storability, extend its storage life, and maintain the nutritional value of Ponkan fruit up to 120 days of cold storage.

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Section: Methodsmentioning

confidence: 99%

Section: Fruit Decay and Weight Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gum Arabic Edible Coating Reduces Postharvest Decay and Alleviates Nutritional Quality Deterioration of Ponkan Fruit During Cold Storage

et al. 2021

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“…In pummelo fruits, enzymes (H + -ATPase, Ca 2+ -ATPase, Mg 2+ -ATPase, cytochrome C oxidase, succinate dehydrogenase, and malate dehydrogenase) that participated in energy metabolism were markedly maintained by chitosan coating, which was accompanied by decreased cellulose content in pulp, alleviated postharvest senescence, and reduced energy depletion of fruits [44]. Based on findings reported by Chen et al [44], it can be deduced that markedly maintained malate dehydrogenase in pummelo fruits may act as a mediator for regulation of malic acid and citric acid contents. e findings in this study combined with the reports suggest that malic acid and citric acid contents remain constant as much as possible in response to juice sac granulation.…”

Section: E Possible Roles Of Organic Acids Involved In Regulatingmentioning

confidence: 99%

Mitochondria: Key Organelles Accelerating Cell Wall Material Accumulation in Juice Sacs of Pummelo (Citrus grandis L. Osbeck) Fruits during Postharvest Storage

Lin

2021

Journal of Food Quality

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Granulation is a physiological disorder of juice sacs in citrus fruits, which develops through secondary cell wall formation. However, the synergistic changes in the cytoplasm of juice sac cells remain largely unknown. This study investigated the dynamic ultrastructure of juice sacs of “Guanxi” pummelo fruits by transmission electron microscopy and determined their cell wall material, soluble sugar, and organic acid contents. The results showed that lignin and hemicellulose are accumulated in juice sacs isolated from dorsal vascular bundles, while lignin and cellulose contribute to the granulation of juice sacs isolated from septal vascular bundles. The significant differences in lignin, cellulose, and hemicellulose contents between the two types of juice sacs began to be observed at 30 days of storage. Fructose levels were elevated in juice sacs isolated from the dorsal vascular bundles from 10 to 60 days. Sucrose contents significantly decreased in juice sacs isolated from the septal vascular bundles from 30 to 60 days. Meanwhile glucose, citric acid, and malic acid contents exhibited no apparent changes in both types of juice sacs. Based on the comprehensive analysis of the ultrastructure of both types of juice sacs, it was clearly found that plasma membrane ruptures induce cell wall material synthesis in intracellular spaces; however, cell wall substance contents did not significantly increase until the number of mitochondria sharply increased. In particular, sucrose contents began to decrease significantly just after the mitochondria amount largely increased in juice sacs isolated from the septal vascular bundles, indicating that mitochondria play a key role in regulating carbon source sugar partitioning for cell wall component synthesis.

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Cell wall modification and lignin biosynthesis involved in disease resistance against Diaporthe citri in harvested pummelo fruit elicited by carvacrol

et al. 2021

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BACKGROUND Phomopsis stem‐end rot caused by Diaporthe citri, causes significant commercial postharvest losses of pummelo fruit during storage. Carvacrol (CVR) is a known generally recognized as safe and has the ability to prolong the preservation of harvested fruits. In the present study, the inhibitory effects of CVR treatment at the appropriate concentration on Phomopsis stem‐end rot development of harvested pummelo fruit inoculated with D. citri were evaluated by the amounts of cell wall components, the activities and gene expressions of related enzymes involved in cell wall modification and lignin biosynthesis. RESULTS Results indicated that CVR completely inhibited D. citri growth in vitro at 200 mg L−1 and significantly controlled Phomopsis stem‐end rot development in harvested pummelo. The CVR treatment delayed peel softening and browning, and retarded electrolyte leakage, superoxide radical (O2•−) production, and malondialdehyde content. The CVR‐treated fruit maintained higher amounts of cell wall material, protopectin, hemicelluloses, and cellulose, but exhibited lower water‐soluble pectin amount. Moreover, in D. citri‐inoculated fruit, CVR treatment suppressed the activities and gene expressions of cell wall disassembling‐enzymes, including pectin methylesterase, polygalacturonase, cellulase, and β‐galactosidase, while the development of cell wall degradation was reduced. Meanwhile, the CVR treatment enhanced the lignin biosynthesis by increasing the activities and up‐regulating the gene expressions of phenylalanine ammonialyase, cinnamic alcohol dehydrogenase, and peroxidase accompanied with elevated level of lignin in pummelo fruit. CONCLUSION The disease resistance to D. citri in pummelo fruit elicited by CVR treatment is related to delaying cell wall degradation and enhancing lignin biosynthesis. © 2021 Society of Chemical Industry.

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Mitigating effects of chitosan coating on postharvest senescence and energy depletion of harvested pummelo fruit response to granulation stress

Cited by 34 publications

References 39 publications

Gum Arabic Edible Coating Reduces Postharvest Decay and Alleviates Nutritional Quality Deterioration of Ponkan Fruit During Cold Storage

Gum Arabic Edible Coating Reduces Postharvest Decay and Alleviates Nutritional Quality Deterioration of Ponkan Fruit During Cold Storage

Mitochondria: Key Organelles Accelerating Cell Wall Material Accumulation in Juice Sacs of Pummelo (Citrus grandis L. Osbeck) Fruits during Postharvest Storage

Cell wall modification and lignin biosynthesis involved in disease resistance against Diaporthe citri in harvested pummelo fruit elicited by carvacrol

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