In order to improve the viability of lactic acid bacteria in the refrigeration hoarding or during cold storage, to provide a material which Cho effect in trace amounts. Specific polysaccharide of high moisture retention function, ie, culture medium or of lactic acid bacteria, lactic acid bacteria survival improver, which is contained as an active ingredient (low molecular process galactomannan) galactomannan which has been subjected to low-molecular-weight process By respect, it is added to a final concentration in the range of 0.01 to 1.0 wt%, it is possible to improve the viability of lactic acid bacteria in a refrigeration or in a refrigerated hoarding. It is also possible that the same time, to provide food and drink lactic acid bacteria survival-improving agent comprising, as an active ingredient, this low molecular process galactomannan was added.冷蔵或いは冷凍保蔵中における乳酸菌の生残性を向上させる目的において、微量で著効を示す物質を提供する。水分保持機能の高い特定の多糖類、即ち、低分子化処理を施したガラクトマンナン(低分子化処理ガラクトマンナン)が有効成分として含有された乳酸菌生残性向上剤を、乳酸菌の培地又は培養物に対して、最終濃度が0.01~1.0重量%の範囲となるように添加することで、冷蔵或いは冷凍保蔵中における乳酸菌の生残性を向上させることが可能となる。併せて、この低分子化処理ガラクトマンナンを有効成分とする乳酸菌生残性向上剤が添加された飲食物を提供することも可能となる。
