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Viability of lactic acid bacteria and bifidobacteria in fermented soymilk after drying, subsequent rehydration and storage.
Int J Food Microbiol. 2004 Jun 01; 93(2):209-17.IJ

Abstract

To develop a probiotic dietary adjunct, soymilk fermented with various combinations of lactic acid bacteria (Streptococcus thermophilus and Lactobacillus acidophilus) and bifidobacteria (Bifidobacterium longum and Bifidobacterium infantis) was subjected to freeze-drying and spray-drying. Survival of the starter organisms during the drying process, subsequent rehydration at different temperatures and during a 4-month period of storage under different storage conditions was examined. After freeze-drying, lactic acid bacteria and bifidobacteria exhibited a survival percent of 46.2-75.1% and 43.2-51.9%, respectively, higher than that noted after spray-drying. Regardless of the drying condition, S. thermophilus showed a higher percentage of survival than L. acidophilus, while B. longum survived better than B. infantis. Further study with soymilk fermented with S. thermophilus and B. longum revealed that the freeze-dried and spray-dried fermented soymilk rehydrated at 35-50 degrees C and 20 degrees C, respectively, was optimum for the recovery of the starter organisms. Both S. thermophilus and B. longum survived better in the freeze-dried than the spray-dried fermented soymilk during storage. A higher percent of survival was also noted for both the starter organisms when the dried fermented soymilk was stored at 4 degrees C than 25 degrees C. Holding the dried fermented soymilk in the laminated pouch enabled S. thermophilus and B. longum to exhibit a higher percentage of survival than in the deoxidant- and desiccant-containing glass or polyester (PET) bottle. Among all the packaging materials and storage temperatures tested, starter organisms were most stable in the dried fermented soymilk held in laminated pouch and stored at 4 degrees C. Under this storage condition, S. thermophilus and B. longum showed a survival percentage of 51.1% and 68.8%, respectively, in the freeze-dried fermented soymilk after 4 months of storage. Meanwhile, S. thermophilus and B. infantis in the spray-dried fermented soymilk showed a survival percent of 29.5% and 57.7%, respectively.

Authors+Show Affiliations

Graduate Institute of Food Science and Technology, National Taiwan University 59, lane 144, Keelung Rd., Sec. 4, Taipei, Taiwan.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15135959

Citation

Wang, Yi-Chieh, et al. "Viability of Lactic Acid Bacteria and Bifidobacteria in Fermented Soymilk After Drying, Subsequent Rehydration and Storage." International Journal of Food Microbiology, vol. 93, no. 2, 2004, pp. 209-17.
Wang YC, Yu RC, Chou CC. Viability of lactic acid bacteria and bifidobacteria in fermented soymilk after drying, subsequent rehydration and storage. Int J Food Microbiol. 2004;93(2):209-17.
Wang, Y. C., Yu, R. C., & Chou, C. C. (2004). Viability of lactic acid bacteria and bifidobacteria in fermented soymilk after drying, subsequent rehydration and storage. International Journal of Food Microbiology, 93(2), 209-17.
Wang YC, Yu RC, Chou CC. Viability of Lactic Acid Bacteria and Bifidobacteria in Fermented Soymilk After Drying, Subsequent Rehydration and Storage. Int J Food Microbiol. 2004 Jun 1;93(2):209-17. PubMed PMID: 15135959.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Viability of lactic acid bacteria and bifidobacteria in fermented soymilk after drying, subsequent rehydration and storage. AU - Wang,Yi-Chieh, AU - Yu,Roch-Chui, AU - Chou,Cheng-Chun, PY - 2003/03/27/received PY - 2003/10/31/revised PY - 2003/12/01/accepted PY - 2004/5/12/pubmed PY - 2004/8/27/medline PY - 2004/5/12/entrez SP - 209 EP - 17 JF - International journal of food microbiology JO - Int J Food Microbiol VL - 93 IS - 2 N2 - To develop a probiotic dietary adjunct, soymilk fermented with various combinations of lactic acid bacteria (Streptococcus thermophilus and Lactobacillus acidophilus) and bifidobacteria (Bifidobacterium longum and Bifidobacterium infantis) was subjected to freeze-drying and spray-drying. Survival of the starter organisms during the drying process, subsequent rehydration at different temperatures and during a 4-month period of storage under different storage conditions was examined. After freeze-drying, lactic acid bacteria and bifidobacteria exhibited a survival percent of 46.2-75.1% and 43.2-51.9%, respectively, higher than that noted after spray-drying. Regardless of the drying condition, S. thermophilus showed a higher percentage of survival than L. acidophilus, while B. longum survived better than B. infantis. Further study with soymilk fermented with S. thermophilus and B. longum revealed that the freeze-dried and spray-dried fermented soymilk rehydrated at 35-50 degrees C and 20 degrees C, respectively, was optimum for the recovery of the starter organisms. Both S. thermophilus and B. longum survived better in the freeze-dried than the spray-dried fermented soymilk during storage. A higher percent of survival was also noted for both the starter organisms when the dried fermented soymilk was stored at 4 degrees C than 25 degrees C. Holding the dried fermented soymilk in the laminated pouch enabled S. thermophilus and B. longum to exhibit a higher percentage of survival than in the deoxidant- and desiccant-containing glass or polyester (PET) bottle. Among all the packaging materials and storage temperatures tested, starter organisms were most stable in the dried fermented soymilk held in laminated pouch and stored at 4 degrees C. Under this storage condition, S. thermophilus and B. longum showed a survival percentage of 51.1% and 68.8%, respectively, in the freeze-dried fermented soymilk after 4 months of storage. Meanwhile, S. thermophilus and B. infantis in the spray-dried fermented soymilk showed a survival percent of 29.5% and 57.7%, respectively. SN - 0168-1605 UR - https://www.unboundmedicine.com/medline/citation/15135959/Viability_of_lactic_acid_bacteria_and_bifidobacteria_in_fermented_soymilk_after_drying_subsequent_rehydration_and_storage_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0168160503006068 DB - PRIME DP - Unbound Medicine ER -