Phosphate Heat Treatment of Milk to Prevent Bacteriophage Proliferation in Lactic Cultures

Hargrove, R. E.; McDonough, F.E.; Tittsler, Ralph P.

doi:10.3168/jds.s0022-0302(61)89970-0

Cited by 23 publications

(7 citation statements)

References 4 publications

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“…These results were contradicted by other data (Puck et al, 1951). To reduce the available Ca++ several authors suggested that milk be treated with phosphates (Reiter, 1956a;Babel, 1958;Hargrove, 1959;Hargrove et al, 1961;Kadis and Babel, 1962;Bester and Lombard, 1962;Henning et al, 1965;Robertson, 1966;Zottola and Marth, 1966) or citrate (Stassano and de Beaufort, 1925;Doull and Meanwell, 1953), or polyelectrolytes (polysaccharides such as pectin or dextranglycollate) (Reiter, 1956b). These compounds sequester the available calcium due to their polymeric electrolyte nature.…”

Section: Ca++ Effects On Phagesmentioning

confidence: 99%

Lactic acid bacteria and metal ions

Boyaval

1989

Lait

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Summary -While substantial literature has accumulated on the utilization of major nutrients such as carbon and nitrogen by lactic acid bacteria, Iittle is known about the effects of «rninor» nutrients such as metal ions. An attempt has been made to summarize the available information on transport, nutrition, enzymatic implications and importance of metal ions tolacfic acid bacteria. Mg++, Mn++, Fe++,Ca++, K+ and Na+ have been considered in detail.Knowledge of the relationships between lactic acid bacteria and heavy metals is very fragmentary. Generally, they have an inhibitory effect (Cd, Cs, Cu, Zn, Ur, Th) or no effect (Mo); however, they sometimes have a positive effect (Co, Zr). lactlc acid bacteria -metal ions -nutrition -transport -calcium -magneslum -potassiumiron -manganese -sodium -heavy metals

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Section: Ca++ Effects On Phagesmentioning

confidence: 99%

Lactic acid bacteria and metal ions

Boyaval

1989

Lait

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“…The addition of calcium probably decreased the amount of this adsorption. The highest phage titer was ob- tained in skim milk without added calcium, 5.0 x 101 PFU/ml, but in TSB with supplemental calcium the titer reached 2.0 X 1016 PFU/ml. Effects of binding calcium on proliferation of staphylococcal phages.…”

Section: Resultsmentioning

confidence: 93%

Effects of Supplemental Calcium or Calcium-binding Agents on Staphylococcal Bacteriophage Proliferation in Skim Milk1

Das¹,

Marshall²

1967

Applied Microbiology

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Additions of 0.0005 N calcium borogluconate to Trypticase Soy Broth (TSB) produced an increase in phage titer about 1 million-fold, whereas its addition to skim milk resulted in about a 100-fold decrease in the maximal titer. Supplemental calcium had a stimulatory influence on bacterial growth in TSB but not in skim milk. Studies were made of the effect of binding of calcium of skim milk on the proliferation of staphylococcal bacteriophage. Sequestering the calcium with 2% phosphate mixture inactivated the phages without affecting the bacterial growth. However, chelation of calcium by 0.012% ethylenediaminetetraacetic acid produced an inhibitory effect on both the phages and the bacteria.

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“…The findings of Babel (8) amd Crawford et al (25) strengthened the usage of a phage resistant media for the propagation of starter cultures. Later, several media were developed, using calcium-binding agents, for the growth and propagation of bacteriophage-free cultures (39,40,36,62).…”

Section: This Theory Was Confirmed Experimentally By Nichols Andmentioning

confidence: 99%

Development of cultural techniques for the study of Streptococcus thermophilus and Lactobacillus bacteriophages

Reddy

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Phosphate Heat Treatment of Milk to Prevent Bacteriophage Proliferation in Lactic Cultures

Cited by 23 publications

References 4 publications

Lactic acid bacteria and metal ions

Lactic acid bacteria and metal ions

Effects of Supplemental Calcium or Calcium-binding Agents on Staphylococcal Bacteriophage Proliferation in Skim Milk1

Development of cultural techniques for the study of Streptococcus thermophilus and Lactobacillus bacteriophages

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