Sumitomo Osaka Cement Co., Ltd.

Suntory Holdings Limited

Tokyo Metropolitan University

The Furukawa Battery Co., Ltd.

Tomonori Suzuki

Kiyoshi Kanamura

Hidetoshi Abe

Mitsumasa Saito

Takashi Eguro

Kenji Yamamoto

Koichi Nakahara

Yoshinori Beppu

Morio Mitsuhashi

Takao Takahashi

Harumichi Seta

Soichiro Shima

Yuka Murakami

Koichiro Yamada

Provided is a novel roasting method that is effective for improving the flavor of roasted coffee beans. The present invention provides a method for producing roasted coffee beans, including a step of roasting coffee beans, wherein a ratio of lightness (lightness ratio) of the coffee beans is 0.65 or more, and a temperature increasing rate of a roasting temperature is retained at −0.15° C./second to 0.15° C./second.

Method for producing roasted coffee beans and roasted coffee beans

A diketopiperazine mixture suitable for mixing with a food or drink and a method for producing the mixture. High-temperature and high-pressure treatment of plant peptides in a liquid allows production of a plant extract containing a high concentration of diketopiperazines including cyclo-leucyl-leucine and cyclo-leucyl-phenylalanine. Diketopiperazines having excellent flavor derived from a plant natural product and can produce a food or drink provided with the functions of the diketopiperazines by directly mixing the diketopiperazines with the food or drink.

Plant extract containing diketopiperazine and method for producing same

A method of manufacturing a multicomponent lithium phosphate compound particle with an olivine structure of formula LiM1M2PO, M1 is Fe, Mn or Co; Y satisfies 0.9&#x2266;Y&#x2266;1.2; M2 is Mn, Co, Mg, Ti or Al; and Z satisfies 0&#x3c;Z&#x2266;0.1, in which the M2 concentration is continuously lowered from a surface of the particle to a core portion of the particle. The method includes mixing a lithium M1 phosphate compound with an olivine structure of formula LiM1PO, M1 is Fe, Mn or Co, and X satisfies 0.9&#x2266;X&#x2266;1.2, and a precursor of a lithium M2 phosphate compound with an olivine structure of formula LiM2PO, M2 is Mn, Co, Mg, Ti or Al, and X satisfies 0.9&#x2266;X&#x2266;1.2, to form a mixture; and subjecting the mixture to heating in an inert atmosphere or a vacuum.

Method of manufacturing a multicomponent system lithium phosphate compound particle having an olivine structure

There is disclosed a multi-component system lithium phosphate compound particles having an olivine structure and represented by a general formula of LiM1M2POin which M1 is one metal element selected from the group consisting of Fe, Mn and Co, Y is a number satisfying a formula of 0.9&#x2266;Y&#x2266;1.2, M2 is at least one metal element selected from the group consisting of Mn, Co, Mg, Ti and Al, and Z is an number satisfying a formula of 0&#x3c;Z&#x2266;0.1, wherein a concentration of the metal element M2 existing on a surface of the particle is higher than the concentration of that existing in core portion of the particle and that the concentration of the metal element M2 is continuously lowered from the surface of particle to a core portion of the particle.

Multi-component-system lithium phosphate compound particle having an olivine structure and lithium secondary battery employing the lithium phosphate compound particle as a positive electrode material

Growing community of inventors

Iwaki, Japan

Tomonori Suzuki