characterization of lactobacillus plantarum as a potential probiotic in vitro and use of a dairy product (yogurt) as food carrier
نویسندگان
چکیده
background and objective: the current study was undertaken to check in vitro different characteristics of lactobacillus plantarum as potential probiotic. these characteristics include viability of probiotic and ph during cold storage, tolerance to acid and bile, and antibiotic resistance. material and methods: samples of yogurt were stored at 4°c and analyzed in time 0, 1, 3, 7, 10 and 14 days of storage. in these periods, probiotic and starter cultures were enumerated and the ph parameter was analyzed. results and conclusion: a gradual decline in ph was noticed throughout the storage. counting of starter cultures decreased by 0.42 log cycle, and the probiotic's viability decreased by 0.68 log cycle at the end of storage, whereas the probiotic's viability in the samples subjected to re-pasteurization decreased by 0.30, 0.22 log cycles in the selective and reference media, respectively. the average viable cell counts of lactobacillus plantarum decreased by 0.76, and 0.28 log cycles after incubation period (3 h) at 37ºc in the simulated gastric juice (ph 2.0 and 3.0), respectively. generally, probiotic can maintain its viability by 76.672% in (1.0% w v -1) bile. lactobacillus plantarum was resistant to gentamicin, streptomycin, and vancomycin but susceptible to chloramphenicol, and tetracycline. depended on these characteristics, lactobacillus plantarum showed probiotic potential. conflict of interest: the authors declare no conflict of interest.
منابع مشابه
a fundamental study of "histiriographic metafiction", and "literary genres", as introduced in "new historical philosophy", and tracing them in the works of julian barnes.
abstract a fundamental study of “historio-graphic metafiction” and “literary genres”, as introduced in “new historical philosophy”, and tracing them in the works of julian barnes having studied the two novels, the porcupine and arthur & george, by julian barnes, the researcher has applied linda hutcheon’s historio-graphic metafictional theories to them. the thesis is divided into five cha...
15 صفحه اولFormulation and In-vitro Evaluation of Tretinoin Microemulsion as a Potential Carrier for Dermal Drug Delivery
In this study, tretinoin microemulsion has been formulated based on phase diagram studies by changing the amounts and proportions of inactive ingredients, such as surfactants, co-surfactants and oils. The effects of these variables have been determined on microemulsion formation, particle size of the dispersed phase and release profile of tretinoin from microemulsion through dialysis membrane. ...
متن کاملFormulation and In-vitro Evaluation of Tretinoin Microemulsion as a Potential Carrier for Dermal Drug Delivery
In this study, tretinoin microemulsion has been formulated based on phase diagram studies by changing the amounts and proportions of inactive ingredients, such as surfactants, co-surfactants and oils. The effects of these variables have been determined on microemulsion formation, particle size of the dispersed phase and release profile of tretinoin from microemulsion through dialysis membrane. ...
متن کاملcritical period effects in foreign language learning:the influence of maturational state on the acquisition of reading,writing, and grammar in english as a foreign language
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
15 صفحه اولthe significance of conjunction as a cohesive device in teaching writing
the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
applied food biotechnologyجلد ۴، شماره ۱، صفحات ۱۱-۱۸
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023