PROBLEM TO BE SOLVED: To obtain a quercetin-containing extract that is extracted from onions as a raw material and high in quercetin purity, and has low moisture absorptivity due to the low content of water-soluble components, hardly causes defects such as discoloration, enables long-term storage in a powder or solid state, and requires no special management of its storage, thereby being easy to handle.SOLUTION: A quercetin-containing extract is extracted from onions, and has a quercetin purity of 7% or more and a water-soluble component content of 90 mass% or less.COPYRIGHT: (C)2016,JPO&INPIT【課題】タマネギを原料とする抽出によるケルセチン含有抽出物であり、ケルセチン純度が高く、水溶性成分の含有量が低いために吸湿率が低く、変色等の不具合が起こりにくい、粉末や固形状態での長期保管が可能である、保管に特段の管理が不要であるなど、取り扱いが容易なケルセチン含有抽出物を得ること。【解決手段】タマネギより抽出したケルセチン含有抽出物であって、ケルセチン純度が7%以上であり、水溶性成分の含有量が90質量%以下であるケルセチン含有抽出物。【選択図】図1
