Scholarlink

<p>Cellulose, the most abundant natural polymer, is non-toxic and highly biodegradable. Millet residue contains around 49±0.04% cellulose.&#xa0;Therefore, this study used pearl millet husk after oil extraction as a source of cellulose. Alkaline treatment and bleaching were performed for the removal of unwanted compounds. FTIR confirmed the purity of cellulose. Cellulose was further characterized using XRD and SEM. Then, a cellulose-based hydrogel was prepared using citric acid as a cross-linking agent. Lycopene was used as the anti-browning agent in hydrogel. The hydrogel-coated samples greatly lowered the activity of polyphenol oxidase (PPO), an important enzyme in the browning process. The activity levels were 0.22 U/min/g for the coated samples and 0.31 U/min/g for the uncoated samples after 48 hours of incubation at room temperature, indicating an effective stop to browning. Color analysis revealed notable improvements in the lightness (L*) of the coated potatoes, with a value of 80 compared to 59 for uncoated samples. Furthermore, texture analysis shows that coated potato-cut slices retain greater hardness and gumminess than uncoated potato-cut slices (<i>p</i>&lt;0.05). In short overall physiochemical and nutritional quality of potato cut slices indicate enhanced quality and freshness. Hence, cellulose-based hydrogel containing lycopene is suggested for covering vegetables because of its anti-browning action.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Pearl millet husk cellulose-based hydrogel with lycopene as antibrowning agent for the edible coating of minimally processed sliced potatoes

  • 期刊论文

  • 发表日期：

    2025年6月27日

查看全文
  • Shilpa Haridas,
  • Radhakrishnan Preetha,
  • Santhanalakshmi Gunasekaran

摘要

Cellulose, the most abundant natural polymer, is non-toxic and highly biodegradable. Millet residue contains around 49±0.04% cellulose. Therefore, this study used pearl millet husk after oil extraction as a source of cellulose. Alkaline treatment and bleaching were performed for the removal of unwanted compounds. FTIR confirmed the purity of cellulose. Cellulose was further characterized using XRD and SEM. Then, a cellulose-based hydrogel was prepared using citric acid as a cross-linking agent. Lycopene was used as the anti-browning agent in hydrogel. The hydrogel-coated samples greatly lowered the activity of polyphenol oxidase (PPO), an important enzyme in the browning process. The activity levels were 0.22 U/min/g for the coated samples and 0.31 U/min/g for the uncoated samples after 48 hours of incubation at room temperature, indicating an effective stop to browning. Color analysis revealed notable improvements in the lightness (L*) of the coated potatoes, with a value of 80 compared to 59 for uncoated samples. Furthermore, texture analysis shows that coated potato-cut slices retain greater hardness and gumminess than uncoated potato-cut slices (p<0.05). In short overall physiochemical and nutritional quality of potato cut slices indicate enhanced quality and freshness. Hence, cellulose-based hydrogel containing lycopene is suggested for covering vegetables because of its anti-browning action.