{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T05:04:26Z","timestamp":1780635866362,"version":"3.54.1"},"reference-count":54,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T00:00:00Z","timestamp":1780444800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100011447","name":"Science and Technology Department of Henan Province","doi-asserted-by":"crossref","award":["252102320120"],"award-info":[{"award-number":["252102320120"]}],"id":[{"id":"10.13039\/501100011447","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100011447","name":"Science and Technology Department of Henan Province","doi-asserted-by":"crossref","award":["252102230087"],"award-info":[{"award-number":["252102230087"]}],"id":[{"id":"10.13039\/501100011447","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Doctoral Research Start-up Project of Pingdingshan University","award":["PXY-BSQD-2023046"],"award-info":[{"award-number":["PXY-BSQD-2023046"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Pectin oligosaccharides are promising natural bioactive ingredients, while traditional preparation methods suffer from harsh conditions and environmental drawbacks. Herein, an eco-friendly alkaline hydrogen peroxide degradation method was applied to produce apple pectin oligosaccharides (APOSs), followed by ethanol precipitation. The structural features and antioxidant potential of APOSs were comprehensively characterized. Galacturonic acid (58.2%) was determined as the dominant monosaccharide, along with minor galactose, arabinose, and rhamnose. Sixteen oligosaccharides consisting of homogalacturonan fragments and RG-I hetero-oligosaccharides were identified using NMR, FTIR and UPLC\/Q-TOF-MS. In vitro assays demonstrated excellent radical-scavenging capacities of APOSs. The DPPH and ABTS scavenging rates reached 84.6% (10 mg\/mL) and 96.2% (9 mg\/mL), respectively. This study provides a feasible green strategy for APOS fabrication and clarifies its antioxidant potential, supporting the industrial application of APOS as a high-efficiency natural antioxidant in functional foods.<\/jats:p>","DOI":"10.3390\/molecules31111923","type":"journal-article","created":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T09:33:14Z","timestamp":1780479194000},"page":"1923","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Green Preparation, Structural Characterization, and Antioxidant Activity of Apple Pectin Oligosaccharides Obtained by Hydrogen Peroxide Degradation"],"prefix":"10.3390","volume":"31","author":[{"given":"Huipeng","family":"Liu","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China"},{"name":"National Biochemical Engineering Technology Research Center, Nanjing Technology University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junhao","family":"Li","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanyu","family":"Xie","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiang","family":"Su","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7250-0539","authenticated-orcid":false,"given":"Xihuang","family":"Lin","sequence":"additional","affiliation":[{"name":"Analysis and Test Center, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunli","family":"Cao","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6985","DOI":"10.1111\/1750-3841.17438","article-title":"Research progress and application of pectin: A review","volume":"89","author":"Xiang","year":"2024","journal-title":"J. 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