caa a22 4500 477105858 CHVBK 20180405111553.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF01569916 doi (NATIONALLICENCE)springer-10.1007/BF01569916 Biosurfactants from thermophilic dairy streptococci and their potential role in the fouling control of heat exchanger plates [Elektronische Daten] [H Busscher, M van der Kuijl-Booij, HC van der Mei] Recent work on biosurfactant release by thermophilic dairy streptococci is reviewed. There is a suggestion thatStreptococcus thermophilus isolates may release biosurfactants that stimulate detachment of already-adhering cells and leave an anti-adhesive coating on a substratum. A previously published rapid screening method is described for the identification of biosurfactant-releasing microorganisms, and growth medium supplements to enhance biosurfactant release by thermophilic dairy streptococci are reported. New experimental work described includes the isolation and purification of biosurfactants from dairy isolates by thin layer chromatography. Many compounds isolated were extremely surface-active and reduced the water surface tension to values around 30 mJ m−2 at a concentration of 10 mg ml−1. Most importantly, the thin layer chromatograms of various isolates resembled each other, and an adsorbed purified compound from one isolate retarded the deposition to glass of another isolate by a factor of two. Provided our findings implicate that these biosurfactants could also be adsorbed to heat exchanger plates in pasteurizers and thereby retard colonization by thermophilic streptococci, these compounds may have major economic implications. Further work is required, however. Society for Industrial Microbiology, 1996 biosurfactants nationallicence thermophilic streptococci nationallicence heat exchanger nationallicence Streptococcus thermophilus nationallicence adhesion nationallicence fouling nationallicence Busscher H. Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut van der Kuijl-Booij M. Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut van der Mei HC Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut Journal of Industrial Microbiology Springer-Verlag 16/1(1996-01-01), 15-21 0169-4146 16:1<15 1996 16 10295 https://doi.org/10.1007/BF01569916 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01569916 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Busscher H. Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut NATIONALLICENCE 700 1- van der Kuijl-Booij M. Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut NATIONALLICENCE 700 1- van der Mei HC Materia Technica, University of Groningen, Bloemsingel 10, 9712 KZ, Groningen, The Netherlands aut NATIONALLICENCE 773 0- Journal of Industrial Microbiology Springer-Verlag 16/1(1996-01-01), 15-21 0169-4146 16:1<15 1996 16 10295 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer