The study investigated the potential effect of the Ecklonia cava extract by using Jeju lava seawater (ECE-JLS; hardness: 100, 300 mg/L), which is naturally filtered underground by a volcanic rock layer. The chemical composition, antioxidant-related enzyme activities, radical scavenging activities, reactive oxygen species (ROS) production in Vero cells, and nitric oxide (NO) production in Raw 264.7 cells were measured to evaluate the antioxidant and anti-inflammatory activities of the extract. The total polyphenol and flavonoid contents of ECE-JLS100 and 300 were 156.41± 1.15, 166.16±2.27 mg/g, and 343.76±2.40, 373.90±3.67 mg/g, respectively. The concentration of ECE-JLS’ SOD and CAT-like activities was increased. ECE-JLS in the range of 0.25 to 2 mg/mL exhibited remarkable DPPH radical and hydrogen peroxide scavenging activities. ECE-JLS100 and 300 inhibited total ROS generation by 21.4±0.4 and 23.9± 0.3% in H2O2-induced Vero cells at 200 g/mL concentration, respectively. ECE-JLS100 and 300 decreased NO production, with levels of about 55.0±2.4 and 56.5±1.8% at 200 g/mL concentration, respectively. The contents of TNF- were decreased compared to the negative control. These observations provide helpful information for the potential industrial use of Jeju lava seawater. Also, ECE-JLSW could be used as a functional food material.
The purpose of this study is to construct an outlook model that is consistent with the “Fisheries Outlook” monthly published by the Fisheries Outlook Center of the Korea Maritime Institute(KMI). In particular, it was designed as a partial equilibrium model limited to abalone items, but a model was constructed with a dynamic ecological equation model(DEEM) system taking into account biological breeding and shipping time. The results of this study are significant in that they can be used as basic data for model development of various items in the future. In this study, due to the limitation of monthly data, the market equilibrium price was calculated by using the recursive model construction method to be calculated directly as an inverse demand. A model was built in the form of a structural equation model that can explain economic causality rather than a conventional time series analysis model. The research results and implications are as follows. As a result of the estimation of the amount of young seashells planting, it was estimated that the coefficient of the amount of young seashells planting from the previous year was estimated to be 0.82 so that there was no significant difference in the amount of young seashells planting this year and last year. It is also meant to be nurtured for a long time after aquaculture license and limited aquaculture area(edge style) and implantation. The economic factor, the coefficient of price from last year was estimated at 0.47. In the case of breeding quantity, it was estimated that the longer the breeding period, the larger the coefficient of breeding quantity in the previous period. It was analyzed that the impact of shipments on the breeding volume increased. In the case of shipments, the coefficient of production price was estimated unelastically. As the period of rearing increased, the estimation coefficient decreased. Such result indicates that the expected price, which is an economic factor variable and that had less influence on the intention to shipments. In addition, the elasticity of the breeding quantity was estimated more unelastically as the breeding period increased. This is also correlated with the relative coefficient size of the expected price. The abalone supply and demand forecast model developed in this study is significant in that it reduces the prediction error than the existing model using the ecological equation modeling system and the economic causal model. However, there are limitations in establishing a system of simultaneous equations that can be linked to production and consumption between industries and items. This is left as a future research project.
본 연구에서는 최근 각종 영양적 기능적 특성으로 새롭게 주목받고 있는 호박과 단호박의 식품성분 특성을 분석하여 식품가공용 중간 소재로서 이용하는데 있어서 기본 자료로 이용하고자 비교 검토하였다. 단호박은 수분함량이 87.87%로 호박의 94.19% 보다 월등히 낮았으며 기타 일반성분은 단호박의 함량이 높게 나타났다. 유리당은 glucose fructose sucrose순이었으며 단호박에는 소량의 mannitol 함유되어 있었다. 총 유리아미노산 함량에서 호박은 526n1g%, 단호박은 846mg%로 단호박이 높은 함량을 나타내었다. 유리아미노산은 호박의 경우 aspartic acid threonine, cystine의 함량이 높았고 단호박에서는 cystina arginine, tyrosine의 함량이 높게 나타났으며 특히 필수아미노산의 함량에서 단호박이 월등히 높게 나타났다. 비휘발성 유기산함량은 호박이 124.22mg%,단호박이 2배가량 많았으며 호박에는 malic arid가 단호박에는 citric acid가 가장 많았다. 지방산의 조성은 호박의 경우 palmitic acid, Iinolenic acid, Iinoleic arid 순이었으며 단호박에서는 oleic acid linoleic acid, palmitic acid 순으로 불포화지방산의 비율은 호박은 52.3%, 단호박은 71.5%를 차지하였다. 또한 무기질, vitamin C 및 carotenoid 함량 등에서도 단호박이 월등히 높게 나타나 영양적으로는 호박보다 우수하였다.
This study was conducted to develop purees from pumpkin and sweet-pumpkin. Soluble solids in pumpkins were increased as heating time increase. The maximum yield of puree from sweet-pumpkin marked 78.2% when in prepared at 121 for 60 minutes heating, but puree from pumpkin was 53.2% at 121 for 40 minutes heating. Soluble solid and yield of pumpkin purees were increased with enzyme treatment. but viscosity was deceased remarkably. Hunter's a and b values of puree from sweet-pumpkin were higher than puree from pumpkin, and it was considered due to higher content of carotenoid. Organoleptic qualities of puree from pumpkin and sweet-pumpkin were investigated by 5-point scale and the most effective heating time was 40 minutes at 121.