{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T14:32:01Z","timestamp":1784125921236,"version":"3.55.0"},"reference-count":66,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2023,12,6]],"date-time":"2023-12-06T00:00:00Z","timestamp":1701820800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Demonstration Project of Germplasm Resources and Product Development for the Aromatic Plantused as Mosquito Repellent","award":["E1YNO61B"],"award-info":[{"award-number":["E1YNO61B"]}]},{"name":"Demonstration Project of Germplasm Resources and Product Development for the Aromatic Plantused as Mosquito Repellent","award":["31960048"],"award-info":[{"award-number":["31960048"]}]},{"name":"Demonstration Project of Germplasm Resources and Product Development for the Aromatic Plantused as Mosquito Repellent","award":["202201AT070118"],"award-info":[{"award-number":["202201AT070118"]}]},{"name":"Demonstration Project of Germplasm Resources and Product Development for the Aromatic Plantused as Mosquito Repellent","award":["YNWRQNBJ-2019\u2013208"],"award-info":[{"award-number":["YNWRQNBJ-2019\u2013208"]}]},{"name":"National Natural Science Foundation of China","award":["E1YNO61B"],"award-info":[{"award-number":["E1YNO61B"]}]},{"name":"National Natural Science Foundation of China","award":["31960048"],"award-info":[{"award-number":["31960048"]}]},{"name":"National Natural Science Foundation of China","award":["202201AT070118"],"award-info":[{"award-number":["202201AT070118"]}]},{"name":"National Natural Science Foundation of China","award":["YNWRQNBJ-2019\u2013208"],"award-info":[{"award-number":["YNWRQNBJ-2019\u2013208"]}]},{"name":"Department of Science and Technology of Yunnan Province","award":["E1YNO61B"],"award-info":[{"award-number":["E1YNO61B"]}]},{"name":"Department of Science and Technology of Yunnan Province","award":["31960048"],"award-info":[{"award-number":["31960048"]}]},{"name":"Department of Science and Technology of Yunnan Province","award":["202201AT070118"],"award-info":[{"award-number":["202201AT070118"]}]},{"name":"Department of Science and Technology of Yunnan Province","award":["YNWRQNBJ-2019\u2013208"],"award-info":[{"award-number":["YNWRQNBJ-2019\u2013208"]}]},{"name":"Ten Thousand Talents Program of Yunnan","award":["E1YNO61B"],"award-info":[{"award-number":["E1YNO61B"]}]},{"name":"Ten Thousand Talents Program of Yunnan","award":["31960048"],"award-info":[{"award-number":["31960048"]}]},{"name":"Ten Thousand Talents Program of Yunnan","award":["202201AT070118"],"award-info":[{"award-number":["202201AT070118"]}]},{"name":"Ten Thousand Talents Program of Yunnan","award":["YNWRQNBJ-2019\u2013208"],"award-info":[{"award-number":["YNWRQNBJ-2019\u2013208"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The polysaccharides extracted from Aspidopterys obcordata are thought to have anti-urolithiasis activity in Drosophila kidney stones. This study aimed to assess the effects of different extraction solvents on the yield, chemical composition, and bioactivity of polysaccharides from A. obcordata. A. obcordata polysaccharides were extracted by using four solutions: hot water, HCl solution, NaOH solution, and 0.1 M NaCl. The results revealed that the extraction solvents significantly influenced the extraction yields, molecular weight distribution, monosaccharide compositions, preliminary structural characteristics, and microstructures of polysaccharides. The NaOH solution\u2019s extraction yield was significantly higher than the other extraction methods. Vitro antioxidant activity assays revealed that the NaOH solution extracted exhibited superior scavenging abilities towards DPPH and ABTS radicals and higher FRAP values than other polysaccharides. The vitro assays conducted for calcium oxalate crystallization demonstrated that four polysaccharides exhibited inhibitory effects on the nucleation and aggregation of calcium oxalate crystals, impeded calcium oxalate monohydrate growth, and induced calcium oxalate dihydrate formation. The NaOH solution extracted exhibited the most pronounced inhibition of calcium oxalate crystal nucleation, while the hot water extracted demonstrated the most significant suppression of calcium oxalate crystal aggregation. Therefore, it can be inferred that polysaccharides extracted with NaOH solution exhibited significant potential as a viable approach for extracting polysaccharides from stems due to their superior yield and the remarkable bioactivity of the resulting products.<\/jats:p>","DOI":"10.3390\/molecules28247977","type":"journal-article","created":{"date-parts":[[2023,12,6]],"date-time":"2023-12-06T11:32:29Z","timestamp":1701862349000},"page":"7977","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Comparative Study of the Structural Characteristics and Bioactivity of Polysaccharides Extracted from Aspidopterys obcordata Hemsl. Using Different Solvents"],"prefix":"10.3390","volume":"28","author":[{"given":"Jia-Rui","family":"Yue","sequence":"first","affiliation":[{"name":"School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China"},{"name":"CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China"},{"name":"Dehong Vocational College, Mangshi 678400, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian-Mei","family":"Lu","sequence":"additional","affiliation":[{"name":"The Center for Gardening and Horticulture, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing-Fei","family":"Fan","sequence":"additional","affiliation":[{"name":"College of Science, Yunnan Agricultural University, Kunming 650201, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Sun","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang-Jian","family":"Li","sequence":"additional","affiliation":[{"name":"Dehong Vocational College, Mangshi 678400, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shi-Lin","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin-Yue","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun-Mei","family":"Niu","sequence":"additional","affiliation":[{"name":"School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"You-Kai","family":"Xu","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming 650500, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,6]]},"reference":[{"key":"ref_1","unstructured":"Wu, C.Y., Raven, P., and Hong, D.Y. 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