Effect of Chitosan/Thyme Oil Coating and UV-C on the Softening and Ripening of Postharvest Blueberry Fruits

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Sun H., Hao D., Tian Y., Huang Y., Wang Y., Qin G., ...Daha Fazla

FOODS, cilt.11, sa.18, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 18
  • Basım Tarihi: 2022
  • Doi Numarası: 10.3390/foods11182795
  • Dergi Adı: FOODS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, CAB Abstracts, Food Science & Technology Abstracts, Veterinary Science Database, Directory of Open Access Journals
  • Anahtar Kelimeler: blueberries, coating, UV-C, chitosan/thyme oil, softening, preservation, CELL-WALL COMPOSITION, CORYMBOSUM L., FIRMNESS, QUALITY, ACID, EXPRESSION, GENES
  • Atatürk Üniversitesi Adresli: Evet

Özet

This study investigated the possible mechanism of softening and senescence of blueberry after harvest using chitosan/thyme oil coating combined with UV-C (short wave ultraviolet irradiation) treatment. On the 56th day of storage, the CBP, cellulose, and hemicellulose contents in the chitosan/thyme oil coating +UV-C-treated group were 1.41, 1.65, and 1.20 times higher than those in the control group. Compared with the control group, the activities of polygalacturonase (PG), pectin methylesterase (PME), beta-glucosidase (beta-Gal), and cellulose (Cx) were significantly reduced (p < 0.05) after chitosan/thyme oil coating +UV-C, and their maximum values decreased by 5.41 mu g/h g, 5.40 U/g, 12.41 U/g, and 3.85 mu g/h g, respectively. Moreover, chitosan/thyme oil coating combined with UV-C treatment inhibited the gene expression of PG, PME, Cx, and beta-Gal and then regulated the decrease in PG, PME, Cx, and beta-Gal activities, inhibited the degradation of cell wall polysaccharides, and delayed the softening and senescence of postharvest blueberries. The results showed that chitosan/thyme oil coating, UV-C, and chitosan/thyme oil coating + UV-C could significantly inhibit postharvest softening of blueberry; chitosan/thyme oil coating +UV-C had the best effect.