Abstract: A method is provided to promote secretion of cholecystokinin (CCK) by administering an active component. The active component includes acrylic acid and/or an unsaturated aldehyde having a main chain of 4 to 12 carbon atoms having a double bond in at least position 2 or 4, where the main chain has 4 to 9 carbon atoms when there is a double bond in only position 2, and the main chain has 9 to 12 carbon atoms when there is a double bond in only position 4. The cholecystokinin secretion-promoting composition can be used as an appetite suppressant. By adding this cholecystokinin secretion-promoting composition to food, appetite-suppressing food products can be provided.

Abstract: A method is provided to promote secretion of cholecystokinin (CCK) by administering an active component. The active component includes acrylic acid and/or an unsaturated aldehyde having a main chain of 4 to 12 carbon atoms having a double bond in at least position 2 or 4, where the main chain has 4 to 9 carbon atoms when there is a double bond in only position 2, and the main chain has 9 to 12 carbon atoms when there is a double bond in only position 4. The cholecystokinin secretion-promoting composition can be used as an appetite suppressant. By adding this cholecystokinin secretion-promoting composition to food, appetite-suppressing food products can be provided.

Abstract: A CCK secretion-promoting substance and a use thereof are provided. This cholecystokinin secretion-promoting composition contains, as an active component, acrylic acid and/or an unsaturated aldehyde having a main chain of 4-12 carbon atoms having a double bond in at least position 2 or 4, wherein the main chain has 4-9 carbon atoms if there is a double bond only in position 2 and the main chain has 9-12 carbon atoms if there is a double bond only in position 4. This cholecystokinin secretion-promoting composition can be used as an appetite suppressant. By adding this cholecystokinin secretion-promoting composition to food, appetite-suppressing food products can be provided.

Abstract: Glasses containing one or more rare-earth elements and one or more halides are disclosed including a region locally transformed into crystallized glass that comprises precipitated rare-earth element-containing halide crystals. Also disclosed are molded objects containing dispersed particles of glass containing one or more rare-earth elements and one or more halides and having a region within which the particles are transformed into crystallized glass particles. The crystallized region is invisible under usual light but can be detected using upconversion luminescence generated by irradiation with excitation laser light having a specific wavelength. Disclosed further are methods for preparing such locally crystallized glasses and molded objects, as well as methods for efficient detection of the crystallized region in such glasses or molded objects.