[صفحه اصلی ]   [Archive] [ English ]  
:: صفحه اصلي :: درباره نشريه :: آخرين شماره :: تمام شماره‌ها :: جستجو :: ثبت نام :: ارسال مقاله :: تماس با ما ::
:: دوره 3، شماره 55 - ( 6-1394 ) ::
جلد 3 شماره 55 صفحات 66-78 برگشت به فهرست نسخه ها
Encapsulation of Green Tea Extract in Nanoliposomes and Evaluation of its Antibacterial, Antioxidant and Prebiotic Properties
چکیده:   (2330 مشاهده)

Background: The application of natural compounds including green tea extract (GTE) in food and pharmaceutical industries is limited. Encapsulation in nanoliposomes could be used as a delivery system to protect these compounds during processing and storage.

Objective: In this study encapsulation of green tea extract in nanoliposomes and evaluation of its antibacterial, antioxidant and prebiotic properties were evaluated.

Methods: GTE was encapsulated in liposomes by thin film layer method and reached to nanoscale with sonication. The prebiotic activity of 1% nanoliposomal GTE was evaluated on the growth of lactobacillus casei and bifidobacterium lactis in MRS broth medium. Furthermore, the antioxidant activity of nanoliposomal GTE was estimated by DPPH assay. The antibacterial activity of nanoliposomal GTE against Bacillus cereus (ATCC11778), Salmonella typhimurium 138 phage type 2, E. coli O157:H7 and Listeria monocytogenes (ATCC19118) was determined using well diffusion technique.

Results: The mean diameter of nanoliposomes was about 44.7± 1.9 nm and had 0.203 ±0.014 polydispersity index. Entrapment eciency of nanoliposomal GTE under the optimum conditions was 97%. Antibacterial activity of GTE was significantly increased after encapsulation in nanoliposomes. The strongest antibacterial activity of nanoliposomal GTE was seen against listeria monocytogenes with an inhibition zone of 16.2 mm while E. coli was the most resistance strain with an inhibition zone of 14 mm. Furthermore, the antioxidant activity of GTE was significantly increased after nanoliposome encapsulation since the IC50 value of nanoliposomal GTE was decreased to 1.78 &mug ml-1. Moreover, addition of 1 % nanoliposomal GTE enhanced the growth rate of Lactobacillus casei and Bifidobacterium lactis to a significant extent.

Conclusion: Nanoencapsulation effectively enhanced beneficial properties of GTE.

 

 

متن کامل [PDF 637 kb]   (1104 دریافت)    
نوع مطالعه: پژوهشي | موضوع مقاله: بهداشت و مواد غذايي
دریافت: ۱۳۹۴/۷/۲۷ | پذیرش: ۱۳۹۴/۷/۲۷ | انتشار: ۱۳۹۴/۷/۲۷
ارسال نظر درباره این مقاله
نام کاربری یا پست الکترونیک شما:

کد امنیتی را در کادر بنویسید >


XML   English Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Noudoost B, Noori N, Amo Abedini G, Gandomi H, Akhondzadeh Basti A, Jebeli Javan A et al . Encapsulation of Green Tea Extract in Nanoliposomes and Evaluation of its Antibacterial, Antioxidant and Prebiotic Properties. JMP. 2015; 3 (55) :66-78
URL: http://jmp.ir/article-1-1119-fa.html

Encapsulation of Green Tea Extract in Nanoliposomes and Evaluation of its Antibacterial, Antioxidant and Prebiotic Properties. فصلنامه گياهان دارويي. 1394; 3 (55) :66-78

URL: http://jmp.ir/article-1-1119-fa.html



دوره 3، شماره 55 - ( 6-1394 ) برگشت به فهرست نسخه ها
فصلنامه علمی پژوهشی گیاهان دارویی Journal of Medicinal Plants
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3708