{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T04:43:49Z","timestamp":1792644229985,"version":"4.5.0"},"reference-count":35,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,3,14]],"date-time":"2023-03-14T00:00:00Z","timestamp":1678752000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["82204237"],"award-info":[{"award-number":["82204237"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Gels"],"abstract":"<jats:p>Konjac glucomannan (KGM) can be degraded by colon-specific enzymes in the colonic environment, making it one of the materials for treating colonic diseases, which has attracted more and more attention. However, during drug administration, especially in the gastric environment and due to its easy swelling, the structure of KGM is usually destroyed and the drug is released, thereby reducing the bioavailability of the drug. To solve this problem, the easy swelling and drug release properties of KGM hydrogels are avoided by creating interpenetrating polymer network hydrogels. In this study, N-isopropylacrylamide (NIPAM) is first formed into a hydrogel framework under the action of a cross-linking agent to stabilize the gel shape before the gel is heated under alkaline conditions to make KGM molecules wrap around the NIPAM framework. The structure of the IPN(KGM\/NIPAM) gel was confirmed using Fourier transform infrared spectroscopy (FT-IR) and x-ray diffractometer (XRD). In the stomach and small intestine, it was found that the release rate and swelling rate of the gel were 30% and 100%, which were lower than 60% and 180% of KGM gel. The experimental results showed that this double network hydrogel has a good colon-directed release profile and fine drug carrier ability. This provides a new idea for the development of konjac glucomannan colon-targeting hydrogel.<\/jats:p>","DOI":"10.3390\/gels9030221","type":"journal-article","created":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T04:39:45Z","timestamp":1678855185000},"page":"221","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Preparation and Application of Double Network Interpenetrating Colon Targeting Hydrogel Based on Konjac Glucomannan and N-Isopropylacrylamide"],"prefix":"10.3390","volume":"9","author":[{"given":"Renhua","family":"Yao","sequence":"first","affiliation":[{"name":"Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoqin","family":"Yu","sequence":"additional","affiliation":[{"name":"Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Deng","sequence":"additional","affiliation":[{"name":"Hubei Hongyu New Packing Material Co., Ltd., 1 Juxiang Avenue, Jiaqueling Town, Yiling District, Yichang 443000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huarong","family":"Zou","sequence":"additional","affiliation":[{"name":"Hubei Hongyu New Packing Material Co., Ltd., 1 Juxiang Avenue, Jiaqueling Town, Yiling District, Yichang 443000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qingwen","family":"He","sequence":"additional","affiliation":[{"name":"Hubei Hongyu New Packing Material Co., Ltd., 1 Juxiang Avenue, Jiaqueling Town, Yiling District, Yichang 443000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenfeng","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Health Care and Nursing, Hubei Three Gorges Polytechnic, Yichang 443000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8082-2431","authenticated-orcid":false,"given":"Chunxiao","family":"Li","sequence":"additional","affiliation":[{"name":"Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kun","family":"Zou","sequence":"additional","affiliation":[{"name":"Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.foodhyd.2019.01.045","article-title":"Functional and pizza bake properties of Mozzarella cheese made with konjac glucomannan as a fat replacer","volume":"92","author":"Dai","year":"2019","journal-title":"Food Hydrocoll."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"727","DOI":"10.1039\/C3TB21640C","article-title":"Glucomannan-poly (N-vinyl pyrrolidinone) bicomponent hydrogels for wound healing","volume":"2","author":"Shahbuddin","year":"2014","journal-title":"J. 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