Study of temperature and food-grade preservatives affecting the in vitro stability of phycocyanin and phycoerythrin extracted from two Nostoc strains

Author:

Nowruzi Bahareh,Porzani Samaneh Jafari

Abstract

Cyanobacteria have many bioactive compounds. In the present study, we investigated the degree of purification and free radical scavenging ability of phycocyanin (PC) and phycoerythrin (PE), and compare their stability against selected preservatives at different temperatures with the aim of achieving the best and most stable preservative in increasing shelf life of PC and PE. After collecting and culturing Nostoc sp. strains FSN and ASN in BG-110 medium, the pigments phycocyanin and phycoerythrin were extracted and purified with 56% ammonium sulfate followed by dialysis. The antioxidant activity of pigments was evaluated by DPPH and ABTS assays. Their stability was compared with food-grade preservatives citric acid, sodium chloride, sucrose, and calcium chloride at two temperatures of 5 °C and 35 °C over time period from 3 to 30 days of cultivation. The results showed that the concentration and purity of the pigments increased after the dialysis, the pigments had antioxidant properties and were more stable at 5 °C. In addition, among different preservatives, citric acid caused more stability over time.

Publisher

University of Ljubljana

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3