乳酸菌の酸生成におよぼす米胚芽の促進効果

概要

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An aqueous extract of rice germ markedly stimulated the acid production of Lactobacillus casei YIT 9018 and Lactobacillus casei subsp. casei S-1 on a skim milk medium. Most of the stimulating activity still remained after ashing the extract. Manganese (Mn) is of the components responsible for the stimulating effect on acid production, because the amount of Mn in the ashed substance exhibited nearly the same effect when it was directly added. Moreover, the presence of organic stimulating substances was suggested. Almost all the stimulating fraction containing Mn was adsorbed by Dowex 50 and eluted with 1 N HCl. The aqueous extract of rice germ appreciably stimulated the acid production by L. delbrueckii subsp. bulgaricus B-5b, L. acidophilus L-54, L. casei subsp. casei L-14, L. paracasei subsp. paracasei IFO 3533, 3953, L. paracasei subsp. paracasei S-2, and L. helveticus B-1, but significantly inhibited production by L. delbrueckii subsp. bulgaricus IFO 13953. However, the extrac had litt1e effect on the acid production by Lactococcus lactis subsp. lactis 527, Lactococcus lactis subsp. cremoris H-61, or Streptococcus thermophilus 510.
社団法人日本家政学会の論文
1999-12-15