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등전점 용해/침전 공정으로 어류 알 분리단백질의 제조과정에서 발생하는 가공처리수에 대한 식품기능성 및 생리활성
이균우,윤인성,강상인,이수광,김재일,김진수,허민수 한국수산과학회 2017 한국수산과학회지 Vol.50 No.6
This study evaluated the protein recovery, functional properties and biological activity of isolate processed water(IPW) generated in the preparation of protein isolates from fish roes (BH, bastard halibut Paralichthys olivaceus; ST,skipjack tuna Katsuwonus pelamis; YT, yellowfin tuna Thunnus albacares) by an isoelectric solubilization and precipitationprocess. The IPWs contained 2.7-5.4 mg/mL of protein, and the protein losses were 8-21% (P<0.05). Theform capacity of IPW-3 for BH and ST, and IPW-4 for YT was 155, 194, and 164%, respectively. The emulsifyingactivity index (27-43 m2/g) of the YT-IPWs was the strongest, followed by ST (7-29 m2/g) and BH (10-19 m2/g). The2,2-diphenyl-1-picrylhydrazyl scavenging activities of IPW-1 and -3 were higher than those of IPW-2 and -4. The2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid scavenging activity (IC50, mg/mL) of IPW-2 and -4 was 0.03mg/mL for BH, 0.04-0.08 mg/mL for ST, and 0.04-0.07 mg/mL for YT. BH IPW-3 had the strongest reducing power(0.41 mg/mL) and superoxide dismutase-like activity (1.68 mg/mL). The angiotensin-I converting enzyme inhibitoryactivity of IPW-3 was the highest for ST (1.52 mg/mL), followed by BH and YT. The common predominant aminoacids in the IPWs were the essential amino acids Val, Leu, Lys, and Arg and the non-essential amino acids Ser, Glu,and Ala.
유류 오염에 의한 요각류 Tigriopus japonicus의 섭식반응
이균우,Lee, Kyun-Woo 한국해양생명과학회 2016 한국해양생명과학회지 Vol.1 No.2
This study examined the feeding response of the harpacticoid copepod, Tigriopus japonicus exposed to WAF or CEWAF to understand whether decreased feeding of the copepod by oil exposure is induced by food avoidance or medium toxicity. In the medium without WAF, there was no difference in the ingestion rate of the copepod among all polluted diets those were exposed to different concentrations of WAF. The present of WAF in the medium however caused a decrease in the ingestion rate at 100% WAF treatment. In the mixed diet treatment with adhesive diatoms and Tetraselmis suecica, T. japonicus had significantly lower ingestion rate on adhesive diatoms than on others in the medium with CEWAF. As a result, decreased ingestion of T. japonicus by oil exposure was caused by oil toxicity in medium, which may not have directly related with an avoidance of polluted food organisms.