{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,18]],"date-time":"2025-12-18T20:08:16Z","timestamp":1766088496290,"version":"build-2065373602"},"reference-count":53,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2025,8,24]],"date-time":"2025-08-24T00:00:00Z","timestamp":1755993600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Basic Research Program of Qinghai Province","award":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"],"award-info":[{"award-number":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"]}]},{"name":"Haixi Mongolian and Tibetan Autonomous Prefecture Science and Technology Project","award":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"],"award-info":[{"award-number":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"]}]},{"name":"Qinghai University Two-level Financial Fund Supported Project","award":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"],"award-info":[{"award-number":["2024-ZJ-966","2025-JC-Q04","SSYS-2025-03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Crown pears exhibit high susceptibility to rot and rapid deterioration, resulting in quality degradation and fruit softening. Edible coatings serve as an effective preservation technology to extend their shelf life. In this study, a composite coating solution was formulated using vitamin C (Vc), glycerol, ethanol, and gliadin derived from highland barley distillers\u2019 grains. The coating formulation was optimized via single-factor experiments and Box\u2013Behnken response surface methodology, with crown pears\u2019 weight loss as the evaluation metric. The optimal composition comprised 19.86 mg\/mL gliadin, 1.47% (v\/v) glycerol, 2.49% (w\/v) Vc, and 80.20% (v\/v) ethanol, achieving a minimized weight loss of (3.30 \u00b1 0.01)%. Treated pears coated with this optimized formulation were stored for 28 days. Preservation efficacy was evaluated through measurements of weight loss, decay rate, total number of colonies, firmness, titratable acid content, and polyphenol oxidase activity. Compared to the uncoated control group, the composite coating treatment significantly mitigated the decline in firmness, weight loss, and titratable acid content of crown pears. Furthermore, it effectively suppressed the increase in polyphenol oxidase (PPO) activity, decay rate, and total number of colonies, thereby extending the shelf life of the fruit.<\/jats:p>","DOI":"10.3390\/polym17172291","type":"journal-article","created":{"date-parts":[[2025,8,25]],"date-time":"2025-08-25T00:09:32Z","timestamp":1756080572000},"page":"2291","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Preservation Effect of Protein-Based Composite Coating Solution from Highland Barley Distillers\u2019 Grains on Crown Pears"],"prefix":"10.3390","volume":"17","author":[{"given":"Qian","family":"Lv","sequence":"first","affiliation":[{"name":"College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Zhao","sequence":"additional","affiliation":[{"name":"College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yiquan","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,24]]},"reference":[{"key":"ref_1","first-page":"7797","article-title":"Comparative research on nutritional quality and flavor compounds of different pear varieties","volume":"11","author":"Zhao","year":"2020","journal-title":"J. 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