J-GLOBAL         Last updated: Jan 12, 2019 at 12:44
Kochi University
Research and Education Faculty, Natural Sciences Cluster Agriculture Unit
Job title
(BLANK)(Kyoto University), (BLANK)(Kyoto University)
Other affiliation
Kochi University

Research Interests


Research Areas


Academic & Professional Experience

Kochi University, Lecturer
Kochi University, Research assistant


Graduate School, Division of Agriculture, Kyoto University
Faculty of Agriculture, Kyoto University

Published Papers

Phatthira Sutloet, Warangkana Sompongse, Katsuji Morioka
International Journal of Food Science and Technology   53 2509-2514   Nov 2018
? 2018 Institute of Food Science and Technology Endogenous proteases are responsible for gel weakening of fish muscle protein. We investigated inhibitory effect of four selected protease inhibitors: soya bean trypsin inhibitor, leupeptin, E64 and ...
Long-term stability of RNA isolated from muscle of red seabream (Pagrus major) during ice storage
Nobuyoshi Nakatsuji, Kohsuke Adachi, Katsuji Morioka*
Fish Physiology and Biochemistry   doi: 10.1007/s10695-018-0588-8   Nov 2018   [Refereed]
Phatthira Sutloet, Warangkana Sompongse, Katsuji Morioka
Journal of Aquatic Food Product Technology   27 247-257   Jan 2018
? 2018 Taylor & Francis. To investigate the setting condition of the gel-forming ability of rohu, optimum setting temperature for strong and weak gels of unwashed and washed rohu gel and optimum setting time for maximum proteolytic activity were...
Haruhisa Fukada, Etsunori Taniguchi, Katsuji Morioka, Toshiro Masumoto
Aquaculture Research   48 5928-5939   Dec 2017
? 2017 John Wiley & Sons Ltd In this study, fish oil (FO) was replaced with canola oil (CO) in juvenile yellowtail diets to establish the optimal replacement levels that ensure adequate feed quality for aquaculture. Juvenile yellowtails (initial...
Yasuaki Matsumoto, La Xuan Thao, Katsuji Morioka, Haruhisa Fukada, Toshiro Masumoto
Aquaculture Science   65 239-246   Jan 2017
? 2017 Japanese Society for Aquaculture Research, Nishimura Toushadou Ltd. All rights reserved. A feeding experiment was conducted in juvenile yellowtail to examine the effects of six graded levels of supplementation taurine (0, 1, 2, 3, 4 and 5%)...
Kohsuke Adachi, Mao Yabumoto, Haekyun Yoo, Katsuji Morioka, Yuzuru Ikeda, Yukio Ueta, Yasunori Sakurai
Invertebrate Reproduction and Development   60 281-289   Oct 2016
? 2016 Informa UK Limited, trading as Taylor & Francis Group. In vitro fertilization of squid requires the jelly substance found in the female oviducal gland; yet, the active component of this substance that facilitates fertilization remains unk...
Kohsuke Adachi, Kento Tanimura, Toshiyuki Mitsui, Takami Morita, Ikuko Yosho, Kou Ikejima, Katsuji Morioka
Fisheries Science   82 835-841   Sep 2016
? 2016, Japanese Society of Fisheries Science. Chionoecetes opilio and Chionoecetes japonicus are closely related crab species that inhabit bathymetrically distinct habitats. C. opilio is caught mainly in waters shallower than 500?m, whereas C. ja...
Dhirendra Prasad Thakur, Katsuji Morioka
Journal of Aquatic Food Product Technology   25 272-280   Feb 2016
? 2016 Taylor & Francis. The collagen distribution in cultured specimens of amberjack and yellowtail were assessed by histochemical observation in relation to the meat texture of the fish. Major structural alteration was observed in the level of...
Yaqin Hu, Katsuji Morioka, Shiguo Chen, Donghong Liu, Xingqian Ye
LWT - Food Science and Technology   60 1249-1253   Jan 2015
? 2014 Elsevier Ltd. Carps were stored in ice for 0, 2 and 4 days. The actomyosin was extracted from the ice-stored fish and the enzymatic activity of cathepsin L and trypsin-like protease in the extract was assayed. The two enzymes remained in th...
H. Fukada, Y. Fujii, H. Matsumoto, N. Takahashi, N. Hosomi, K. Morioka, T. Masumoto
Aquaculture   426-427 264-269   Apr 2014
We developed a new method for improving the quality of fish feed, by using insulin-like growth factor 1 (IGF1) as a potential indicator of dietary amino acid deficiency in yellowtail (Seriola quinqueradiata). First, 7 dispensable amino acid soluti...
Katsuji Morioka, Kenji Ohnishi, Yoshiaki Itoh
Nippon Suisan Gakkaishi (Japanese Edition)   79 1009-1016   Dec 2013
This study was conducted to clarify the difference in discoloration profile of the dark muscle of cultured yellowtail Seriola quinqueradiata and amberjack Seriola dumerili during chilled storage. Discoloration of dark muscle was observed in yellow...
Kohsuke Adachi, Kentaro Toriyama, Tamaki Azekura, Katsuji Morioka, Prasert Tongnunui, Kou Ikejima
Fisheries Science   78 1309-1314   Aug 2012
Mangrove crabs play a crucial role in the carbon cycle in forests by consuming large amounts of mangrove litter, which is mainly composed of cellulose. However, the detailed mechanism of cellulose digestion remains to be elucidated. We tested endo...
Mohammed Ismail Hossain, Katsuji Morioka, Fatema Hoque Shikha, Yoshiaki Itoh
Journal of the Science of Food and Agriculture   91 247-252   Jan 2011
Background: The physical attribute of heat-induced gel texture is highly dependent on the microstructure of the gel. In this study the microstructures of walleye pollack surimi gels preheated at various temperatures with and without inhibitors (et...
Yaqin Hu, Katsuji Morioka, Yoshiaki Itoh
Journal of the Science of Food and Agriculture   90 370-375   Feb 2010
BACKGROUND: Endogenous proteases, among them cysteine-type proteases, are reported to contribute to gel disintegration, resulting in kamaboko of poor quality. Severe gel disintegration occurs in red bulleye surimi gel paste. The objective of this ...
Dhirendra Prasad Thakur, Katsuji Morioka, Naoya Itoh, Mizuho Wada, Yoshiaki Itoh
Fisheries Science   75 1489-1498   Oct 2009
The study was conducted to evaluate the meat texture, muscle proximate composition, lipid class composition, and collagen content of cultured amberjack and to compare these parameters with those of the yellowtail. Our results showed that the meat ...
Ayumi Seno-O, Fumiaki Takakuwa, Tomomi Hashiguchi, Katsuji Morioka, Toshiro Masumoto, Haruhisa Fukada
Fisheries Science   74 1297-1306   Dec 2008
Dietary fish oil (FO) was replaced by olive oil (OO) in young yellowtail Seriola quinqueradiata to investigate its effects on growth, muscular fatty acid composition and prevention of color deterioration of dark muscle during storage. Yellowtail w...
Janista Pattaravivat, Katsuji Morioka, Kenji Onishi, Shuzo Komiyama, Yoshiaki Itoh
Fisheries Science   74 1376-1378   Dec 2008
Yaqin Hu, Katsuji Morioka, Yoshiaki Itoh
Fisheries Science   74 693-695   Jun 2008
Yaqin Hu, Yaqin Hu, Katsuji Morioka, Yoshiaki Itoh
Journal of Food Biochemistry   32 143-152   Apr 2008
Cathepsin L remained with the actomyosin (AM) fraction which was extracted from walleye pollock surimi after three repeats of washing followed by one cycle of dilution-precipitation. The main peak of cathepsin L separated from the peak of AM by Se...


Katsuji Morioka, Akira Nomura, Yoshiaki Itoh
Nippon Suisan Gakkaishi (Japanese Edition)   76 958   Dec 2010
Studies on the effect of sarcoplasmic proteins on the gel formation of fish meat
Memories of the faculty of Agriculture kochi University   (63) 1-60   1995
Nippon Suisan Gakkaishi   58(4) 767-772   1992
Nippon Suisan Gakkaishi   58(8) 1529-1533   1992

Research Grants & Projects

Effective utilization of fish by-products-
The Other Research Programs
Quality assessment of cultured fish
The Other Research Programs
Project Year: 1994