کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8891965 | 1628508 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of refrigerated storage on betacyanin composition, antibacterial activity of red pitahaya (Hylocereus polyrhizus) and cytotoxicity evaluation of betacyanin rich extract on normal human cell lines
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش تغذیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Red pitahaya fruit is rich in purplish-red color water-soluble betacyanins. The effect of refrigerated storage at 4â¯Â°C on the betacyanin composition of red pitahaya was monitored each day, for one week, using HPLC. The betacyanin content of red pitahaya had increased by 57.2% after storage for six days at 4â¯Â°C. From day 2 to day 7, the phyllocactin content decreased from 45.4â¯Â±â¯1.5% to 38.3â¯Â±â¯3.1%, whereas the betanin content increased from 37.9â¯Â±â¯1.6% to 42.7â¯Â±â¯1.5%. Antimicrobial activity was determined using the broth microdilution assay and expressed as minimum inhibitory concentration (MIC). As compared to the freshly harvested fruits (MIC values: 50,000->50,000â¯Î¼gâ¯mLâ1), fruits that were stored for six days at 4â¯Â°C demonstrated better antimicrobial activity (MIC values: 3130-6250â¯Î¼gâ¯mLâ1) against 10 pathogenic Gram-positive and 6 Gram-negative bacteria. Betacyanin rich extract was also examined against normal human cell lines (HEK-293 and THP-1) and found to be not cytotoxic at the levels of 0.39-3.13â¯mgâ¯mLâ1. In summary, refrigerated storage for 6 days increased the betacyanin content, changed the betacyanin composition in red pitahaya and contributed to higher antimicrobial activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: LWT - Volume 91, May 2018, Pages 491-497
Journal: LWT - Volume 91, May 2018, Pages 491-497
نویسندگان
Yi Yi Yong, Gary Dykes, Sui Mae Lee, Wee Sim Choo,