Saraya Co., Ltd.

Osaka University

Yoshihiko Hirata

Michiaki Araki

Emiko Kawamukai

Mizuyuki Ryu

Hitoshi Ito

Yuka Oda

Yoshiki Sawa

Shigeru Miyagawa

Atsuhiro Saito

Nanase Ishii

Yoriko Kato

Yoshifumi Jahana

Wataru Kumano

Motoki Tatsumi

Asuka Nogami

Hirotatsu Ohkawara

The invention relates to an ultrafine bubble (UFB) generator and a method for generating UFB. The invention also provides an ultrafine bubble-containing liquid and a production method of the liquid. An ultrafine bubble generator is prepared by combining (A) a sophorolipid containing acidic sophorolipid and lactonic sophorolipid in a ratio (mass ratio) of 78:22 to 100:0, (B) a free fatty acid or salt thereof, and (C) a gas generation component.

Ultrafine bubble generator and ultrafine bubble generation method

A cell cryopreservation method including adding a 1 volume % of a composition comprising 0.01 wt % to 20 wt % of a sophorose lipid to cells in a cell culture medium just before or up to 6 hours before cryopreserving the cells; and cryopreserving the cell culture medium, wherein the composition improves cell viability after cryopreservation compared to cells that are cryopreserved with a similar composition that does not contain the sophorose lipid.

Cell cryopreservation composition and cryopreservation method

The present invention relates to a reagent kit for detecting biofilm in test tissue, the reagent kit comprising: wherein after a membrane is brought into contact with the test tissue and released from contact, the pretreatment liquid (a), the staining liquid (b), and the decolorizing liquid (c) are brought into contact with the contact surface of the membrane in this order.

Reagent kit for detecting biofilm and method for detecting biofilm

The subject invention provides a novel SL that is widely applicable to various fields including food or beverages, cosmetics, pharmaceuticals, and quasi-drugs. A sophorolipid compound represented by Formula (I) below: (in Formula (I), Rrepresents H or a methyl group; Rand Reach represents H or an acetyl group; one of five Ris a saturated or unsaturated fatty acid residue that may have an OH group, and the remaining four Rare H; Rrepresents a Calkylene group, or Calkenylene group having 1 to 3 double bonds; Rrepresents hydroxy, or may form a single bond together with one of five Rin the compound represented by Formula (II) below) (in Formula (II), Rrepresents H or methyl group; Rand Reach represents H or an acetyl group; Rrepresents a Calkylene group, or Calkenylene group having 1 to 3 double bonds).

Sophorolipid compound and composition comprising same

The present invention provides a low-toxicity sophorolipid-containing composition. The low-toxicity sophorolipid-containing composition contains at least a coloring component, an acidic sophorolipid, a fatty acid, and a hydroxy fatty acid that are derived from an SL-producing yeast culture. The composition contains the following components in the following proportions, in terms of dry weight, based on the total amount of the acidic sophorolipid, a lactonic sophorolipid, the fatty acid, and the hydroxy fatty acid in the composition taken as 100 mass %:

Low-toxicity sophorolipid-containing composition and use therefor

The present invention provides a high-purity acid-form sophorolipid (SL)-containing composition characterized by substantially not containing acetic acid. The high-purity acid-form SL-containing composition can be produced, for example, by the following method:

High-purity acid-form sophorolipid (SL) containing composition and process for preparing same

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Kashiwara, Japan

Yoshihiko Hirata