NDLI: Survival of Lactobacillus acidophilus Encapsulated as Freeze-Dried Culture under Extreme Conditions

Content Provider	IEEE Xplore Digital Library
Author	Chang-lu Wang Da-wei Liu Yu-rong Wang Feng-juan Li Mian-hua Chen Yan-yan Ma
Copyright Year	2010
Abstract	Lactobacillus acidophilus La-1 was encapsulated as freeze-dried culture and its survival rates under various extreme conditions were investigated in this work. The survival rate of the freeze-dried bacteria remained at 87.1% with the viable counts of 2.26×108 cfu/mL, while keeping at pH 2.5 for 2 h, and the micronized culture was also tolerant to 6% NaCl. In 0.1% bile salt medium, the viable counts of Lactobacillus acidophilus La-1 reached to 3.39×109 cfu/mL, and it could also grow exposing to 0.5% bile salt medium. The viable counts were 9.33×107 and 1.03×108 cfu/mL, with survival rates of 44.64% and 49.28%, after keeping in simulated gastric or intestinal juice for 2 h, respectively. These results indicated that the encapsulation of Lactobacillus acidophilus La-1 as lyophilized culture could be quite effective for the bacteria to survive in extreme conditions, and the freeze-dried culture powder might be thus appropriate to be applied in foods or nutritious supplements.
Starting Page	1
Ending Page	4
File Size	228945
Page Count	4
File Format	PDF
ISBN	9781424447121
ISSN	21517622
DOI	10.1109/ICBBE.2010.5515772
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-18
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encapsulation Microorganisms Powders Intestines Dairy products Food technology Laboratories Humans Capacitive sensors Safety
Content Type	Text
Resource Type	Article

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