NDLI: Bioconversion of ovine scotta into lactic acid with pure and mixed cultures of lactic acid bacteria

Content Provider	Springer Nature Link
Author	Secchi, Nicola Giunta, Daniela Pretti, Luca García, Mónica Ruiz Roggio, Tonina Mannazzu, Ilaria Catzeddu, Pasquale
Copyright Year	2011
Abstract	Scotta is the main by-product in the making of ricotta cheese. It is widely produced in southern Europe and particularly in Italy where it represents a serious environmental pollutant due to its high lactose content. With the aim of evaluating whether scotta bioconversion into lactic acid can be considered as an alternative to its disposal, besides providing it with an added value, here the growth, fermentative performances, and lactic acid productions of pure and mixed cultures of Lactobacillus casei, Lactobacillus helveticus, and Streptococcus thermophilus were evaluated on ovine scotta-based media, without and with the addition of nutritional supplements. The outcomes indicate that ovine scotta can be utilized for the biotechnological production of lactic acid with yields up to 92%, comparable to those obtained on cheese-whey. Indeed, the addition of nutritional supplements generally improves the fermentative performances of lactic acid bacteria leading to about 2 g l−1 h−1 of lactic acid. Moreover, the use of mixed cultures for scotta bioconversion reduces the need for nutritional supplements, with no detrimental effects on the productive parameters compared to pure cultures. Finally, by using L. casei and S. thermophilus in pure and mixed cultures, up to 99% optically pure l-lactic acid can be obtained.
Starting Page	175
Ending Page	181
Page Count	7
File Format	PDF
ISSN	13675435
Journal	Journal of Industrial Microbiology and Biotechnology
Volume Number	39
Issue Number	1
e-ISSN	14765535
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-07-08
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Scotta Whey Lactic acid bacteria Lactose bioconversion Lactic acid Biochemistry Biotechnology Genetic Engineering Bioinformatics Microbiology Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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