A pH indicator film based on chitosan and butterfly pudding extract for monitoring fish freshness.
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DOI: 10.1016/j.ijbiomac.2021.02.137
Abstract: A pH indicator film was prepared by mixing natural polymeric chitosan (CH) with natural dye from butterfly pudding extract (BP). The films were determined by color changes at different pH value, absorbance, thickness, moisture content,… read more here.
Keywords: fish freshness; indicator film; butterfly pudding; color changes ... See more keywords