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Matsuoka Y.,Suzuhiro Kamaboko Honten Co. | Matsuoka Y.,University of Tokyo | Wan J.,Suzuhiro Kamaboko Honten Co. | Ushio H.,University of Tokyo | And 3 more authors.
Fisheries Science | Year: 2013

The effects of setting (suwari) at around 40 °C on the breaking strength and breaking strain rate of thermal gels treated at 85 °C for 20 min during the following processing step were examined in association with the polymerization and degradation of myosin heavy chains (MHCs) for surimi prepared from white croaker, walleye pollack and deepsea bonefish. In the case of white croaker and walleye pollack, maximum values of breaking strength and breaking strain rate were obtained after suwari at 30-40 °C for both 30 and 60 min, at which temperature MHCs were polymerized. In comparison, these textual properties of the thermal gels decreased in surimi prepared from deepsea bonefish after suwari at around 38 °C for 30 min and at around 32 °C for 60 min, with concomitant degradation products of MHC. The textual properties of deepsea bonefish after suwari at temperatures >45 °C tended to be almost the same as those after suwari at temperatures of <30 °C, where neither polymerization nor degradation of MHC was observed. © 2013 The Japanese Society of Fisheries Science.


Ueki N.,Suzuhiro Kamaboko Honten Co. | Wan J.,Suzuhiro Kamaboko Honten Co. | Watabe S.,Suzuhiro Kamaboko Honten Co. | Watabe S.,Kitasato University
Food Chemistry | Year: 2016

Thermally-induced gels were made from white croaker (Pennahia argentata) meat in the presence of its organ extracts by pre-heating at 40 and 65°C for 20 min and subsequent heating at 85°C for 20 min. The breaking strength of the gels decreased with increasing concentrations of the intestinal extracts accompanying decomposition of myosin heavy chains. However, no significant changes in the gel strength occurred when the kidney extract was added. The proteolytic activity in the intestinal extracts examined in the meat homogenate had a maximum at 60°C and pH 8.90. These results suggest that the intestinal rather than kidney proteolytic activities are responsible for gel softening known as a modori phenomenon. Thus, the removal of intestinal tracts is essential to maintain a high quality of surimi-based products. © 2015 Elsevier Ltd. All rights reserved.

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