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Citations
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Naresh Kumar Mehta, Amjad K. Balange, Manjusha Lekshmi, Binaya Bhusan Nayak
(2017)
Changes in Dynamic Viscoelastic and Functional Properties of Indian Squid Mantle During Ice Storage
Journal of Food Processing and Preservation, 41(3)
10.1111/jfpp.12891Effect of protease inhibitors on thermal gelation of squid (Illex argentinus). mantle paste
National University of Mar del Plata , Mar del Plata , Argentina
Research of Scientific Research Commission of Buenos Aires Province
National Institute of Research and Development Fishery (INIDEP) Victoria Ocampo s/n Mar del Plata Argentina
National University of Mar del Plata , Mar del Plata , Argentina
Abstract
The characteristics of the thermal gelation of squid mantle paste and the effect of protease inhibitors on them were investigated. Pastes in the absence and presence the protease inhibitors, ethylendiaminetetracetic acid (EDTA) and phenylmethylsulfonyl fluoride (PMSF), were formulated. Pastes were made by the respective one or two step thermal treatments: direct heating at 85°C for 20 min and preincubation at 27 or 40 °C for 3 or 2 hours, followed by heating at 85 °C for 20 min. The gel strength, water holding capacity (WHC) and whiteness of gelled pastes were analyzed. The tricloroacetic acid (TCA) soluble peptides in homogenate of the muscle were determined. Gel strength decreased when heating was made in two steps. EDTA and PMSF were effective in avoiding that decrease when pre-incubation was made at 40 °C. Maximum gel strength was observed for the gels in presence of EDTA, giving values of 255 and 219 g x cm for the samples made by direct heating and pre-incubated at 40 °C respectively. TCA soluble peptides increased between 20 and 60 °C, with maximum values reached at 30 and 60 °C. No significant differences (p>0.05) were observed in gel whiteness, neither with the thermal treatment nor with the inhibitors. The WHC was higher (p<0.05) in the gelated paste formulated with EDTA. These results show a good gelation capacity of I argentinus pastes and improvements with protease inhibitors.
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