首页    期刊浏览 2024年07月07日 星期日
登录注册

文章基本信息

  • 标题:Effect of benzoate, sorbate and citric acid on the storage stability of strawberry juice
  • 本地全文:下载
  • 作者:Shakoor Wisal ; Muhammad Sohail ; Manzoor Ahmad Mashwani
  • 期刊名称:Pakistan Journal of Food Sciences
  • 印刷版ISSN:1605-2552
  • 电子版ISSN:2226-5899
  • 出版年度:2014
  • 卷号:24
  • 期号:4
  • 页码:218-225
  • 出版社:Pakistan Society of Food Scientists and Technologists
  • 摘要:

    This research was carried out to investigate the effect of different additives on the physicochemical and sensory attributes of strawberry juice stored at ambient temperature (20-25oC) for three months. The samples were numbered as, TA12=Strawberry juice (7.5brix) - no preservatives (control) and 0.1% citric acid, TA13=Strawberry juice (7.5brix) with 0.1% sodium benzoate and 0.1% citric acid, TA14=Strawberry juice (7.5brix) with 0.1% potassium sorbate and 0.1% citric acid, TA15=Strawberry juice (7.5brix) with 0.05% sodium benzoate+0.05% potassium sorbate and 0.1% citric acid, TA20=Strawberry juice (30.5brix) - no preservatives (control) and 0.1% citric acid, TA21=Strawberry juice (30.5brix) with 0.1% sodium benzoate and 0.1% citric acid, TA22=Strawberry juice (30.5brix) with 0.1% potassium sorbate and 0.1% citric acid, TA23=Strawberry juice (30.5brix) with 0.05% sodium benzoate+0.05% potassium sorbate and 0.1% citric acid. Maximum increase in total soluble solids (TSS) occurred in TA20 (120%) while minimum change occurred in TA12 (66.67%). Maximum decrease in pH was recorded in TA12 (16.23%) followed by TA20 (12.08%) while minimum decrease was observed in TA23 (7.41%). Maximum increase in titratable acidity was observed in TA12 (127.38%) followed by TA20 (120.00%) while minimum increase was observed in TA23 (92.00%) followed by TA21 (96.00%). Maximum decrease in ascorbic acid was observed in TA12 (65.82%) while minimum decrease was observed in TA23 (40.56%) followed by TA21 (43.23%). Maximum increase in reducing sugar occurred in TA22 (27.82%) followed by TA21 (27.73%) while minimum increase occurred in TA15 (13.10%). Maximum decrease in non reducing sugar was observed in TA20 (90.47%) followed by TA12 (70.42%) while minimum decrease occurred in TA13 (11.26%). On the basis of overall sensory acceptability all the samples were rejected after sometime. Among all the treatments TA12 and TA20 were rejected soon after storage due to spoilage while TA123 followed by TA21 was found most effective but were also rejected after sometime.

  • 关键词:Strawberry juice; benzoate; sorbate; sucrose; amb ient temperature.
国家哲学社会科学文献中心版权所有