文献类型：会议论文

英文题名：Optimization of agar preparation based on transparency

作者：Cai, Ying[1]; Wu, Zhanxia[1]; Zhang, Zhaoyu[1]; Hu, Zhang[1]

机构：[1] Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, China

会议论文集：Mechanical Engineering, Materials Science and Civil Engineering V

会议日期：November 23, 2020 - November 24, 2020

会议地点：Virtual, Online

语种：英文

外文关键词：Processing - Transparency - Tissue culture - Activated carbon - Algae - Polysaccharides - Temperature

外文摘要：To meet the requirement for high transparency of agar gel used in tissue culture, bacteriological applications, and high-quality cosmetics and food, this study on improving the transparency of agar products was carried out by using activated carbon for decolorization and perlite for aiding filtration. The results showed that the pre-coating filtration method was better than that of the mixed slurry filtration, so an orthogonal experiment optimization was conducted using the precoating filtration method based on the single factor experimental results. The experimental results showed that the optimal process conditions based on the transparency index were: concentration of agar of 1.30%, activated carbon dosage of 0.80%, processing temperature of 95 °C, and treatment time of 20 min. Agar products with gel transparency of 58.93% and blue-ray whiteness value of 93.82 could be obtained under these experimental conditions. The order of the factors influencing the decolorization ratio of agar was as follows: activated carbon dosage > concentration of agar > processing temperature > treatment time. The experimental results provided effective procession methods for the production enterprises based on transparency and increased economic benefits, and it was of practical significance. ? 2021 Trans Tech Publications Ltd, Switzerland.