{"title":"Improvement of hydration properties of pectin/nanochitosan films","authors":"Thi Minh Phuong Ngo","doi":"10.1109/ATiGB50996.2021.9423329","DOIUrl":null,"url":null,"abstract":"This study aims to develop hydration properties of pectin/nanochitosan films at different pectin: nanochitosan ratios (100:0; 75:25; 50:50; 25:75 and 0:100). The blending of pectin with nanochitosan at ratio of 50:50 (P/NaCS2) reduced moisture content, swelling degree, water solubility. Moisture sorption isotherms for all P/NaCS films had a sigmoidal shape. Moisture sorption isotherms indicated hydrophobic character of P/NaCS films. Moisture sorption isotherm showed that P/NaCS films should be used at lower than 86%RH. Some models such as GAB, BET, Peleg and Oswin were investigated for predicting the equilibrium moisture content of P/NaCS films. The results showed that the GAB model was the best estimator. SEM micrographs of cross - section morphology of P/NaCS films indicated that certain interactions between pectin and nanochitosan matrix were formed. Therefore, P/NaCS2 films can be used as active packaging to extend the shelf life of food.","PeriodicalId":6690,"journal":{"name":"2020 Applying New Technology in Green Buildings (ATiGB)","volume":"17 1","pages":"120-124"},"PeriodicalIF":0.0000,"publicationDate":"2021-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 Applying New Technology in Green Buildings (ATiGB)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ATiGB50996.2021.9423329","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This study aims to develop hydration properties of pectin/nanochitosan films at different pectin: nanochitosan ratios (100:0; 75:25; 50:50; 25:75 and 0:100). The blending of pectin with nanochitosan at ratio of 50:50 (P/NaCS2) reduced moisture content, swelling degree, water solubility. Moisture sorption isotherms for all P/NaCS films had a sigmoidal shape. Moisture sorption isotherms indicated hydrophobic character of P/NaCS films. Moisture sorption isotherm showed that P/NaCS films should be used at lower than 86%RH. Some models such as GAB, BET, Peleg and Oswin were investigated for predicting the equilibrium moisture content of P/NaCS films. The results showed that the GAB model was the best estimator. SEM micrographs of cross - section morphology of P/NaCS films indicated that certain interactions between pectin and nanochitosan matrix were formed. Therefore, P/NaCS2 films can be used as active packaging to extend the shelf life of food.