A Comparison of the Taste and Nutritional Properties of Domestic Mottled Skate Beringraja pulchra according to the Area Caught, Sex, and Weight

Abstract

This study investigated the taste and nutritional properties of domestic mottled skate Beringraja pulchra as affected by the area caught, sex, and weight. Regardless of these three parameters, free amino acids comprised the main factor affecting taste in all B. pulchras. Taste values for B. pulchra ranged from 2.24 to 3.61, which were much lower than values for other fish. The total amino acid content in B. pulchra ranged from 18.82 to 21.34 g/100 g, similar to values in other fish. The major amino acids affecting both the taste value and total amino acid in B. pulchra were glutamic acid, aspartic acid, and lysine. Mineral content in B. pulchra was as follows: calcium, 252.7-288.3 mg/100 g; phosphorus, 248.2-269.3 mg/100 g; potassium, 345.9-389.5 mg/100 g; magnesium, 24.1-26.7 mg/100 g; and iron, 0.4-0.7 mg/100 g. Based on the results of free amino acid and taste value (used as an indicator to evaluate taste), and total amino acid and minerals (used as an indicator to evaluate nutritional value), the taste and nutritional properties of B. pulchra were not influenced by the area caught or weight, but were affected by the sex of the fish.

Sensory and Nutritional Characterizations of Mottled Skate Beringraja pulchra Caught off Ulleung Island, Korea

“…. (Lee, 1996;Jo et al, 2012b), (Lim, 2003), taurine (Ballatori and Boyer, 1992), dermatan sulfate (Tsegenidis, 1992), , (Jo et al, 2012a;2013), (Cho and Kim, 2008;Lee et al, 2008), (Choi et al, 2003), (Kim et al, 2010) .…”

Spawning Characteristics and Artificial Hatching of Female Mottled Skate, Beringraja pulchra in the West Coast of Korea

“…There have been basic research on skate species regarding taxonomic studies and classification of common names ( Jeong, 1999 , 2000 ), characteristics of R. koreana egg capsules ( Jeong & Kim, 2009 ), it's spawning periods ( Kim et al, 2005 ), and comparative analysis on egg capsule shape ( Ishihara et al, 2012 ). However, there was comparatively less research on the mottled skate ( B. pulchra ) regarding food habits ( Hong et al, 2000 ), reproduction and spawning ( Yeon et al, 1997 ), fishing characteristics by offshore long line fishery ( Jo et al, 2011 ), characteristics of multi-embryo egg capsules and larvae shape ( Jo et al, 2010 ), development on microsatellite markers ( Kang et al, 2012 ), sensory characteristics of domestic mottled skate as affected by area caught, sex and fish weight ( Jo et al, 2012 ), comparison of the nutritional properties ( Jo et al, 2013 ) were exceptions. As the mottled skate is oviparous like hens, with females producing egg capsules almost year-round, it is hard to be produced in mass quantity like other fish species.…”