PROBLEM TO BE SOLVED: To provide a new syneresis inhibitor having freezing and thawing resistance.SOLUTION: A syneresis inhibitor contains Tremella fuciformis polysaccharides as an active ingredient. The syneresis inhibitor can be provided as a new syneresis inhibitor having freezing and thawing resistance that allows provision of food and drink, cosmetics or the like that resist syneresis even when thawed after freezing.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】冷凍解凍耐性を有する新たな離水抑制剤の提供。【解決手段】シロキクラゲ多糖体を有効成分とする離水抑制剤を提供する。この離水抑制剤は、冷凍後解凍しても離水が少ない飲食品、化粧品等の提供を可能とする冷凍解凍耐性を有する新たな離水抑制剤として提供できる。【選択図】なし