PROBLEM TO BE SOLVED: To obtain a nutritional composition that causes neither separation nor flocculation aggregation agglomeration even by sterilization under pressure by heating, has proper hardness of gel, does not substantially separate water and is useful for a gastric fistula patient.SOLUTION: The gelling agent for a nutritional composition for a gastric fistula patient comprises enzymatically hydrolyzed guar gum and agar and/or gellan gum. The gel-like nutritional composition for gastric fistula patient, having resistance to sterilization under pressure by heating, contains 0.5-3 wt.% of such a gelling agent.COPYRIGHT: (C)2007,JPO&INPIT【課題】加圧加熱殺菌を施しても組成物の分離又は凝集がなく、ゲルの硬さが適当であり、離水を実質的に生じない胃瘻患者向けの栄養組成物を提供すること。【解決手段】グアーガム酵素分解物並びに寒天及び/又はジェランガムを含有することを特徴とする、胃瘻患者向け栄養組成物用ゲル化剤、並びにかかるゲル化剤を0.5~3重量%含有することを特徴とする、加圧加熱殺菌に耐性である胃瘻患者向けゲル状栄養組成物。【選択図】なし