• Title/Summary/Keyword: ${\beta}$-mixing

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Quality Characteristics of Jelly Containing Added Turmeric (Curcuma longa L.) and Beet (Beta vulgaris L.) (강황과 비트를 첨가한 젤리의 품질특성)

  • Cho, Young;Choi, Mi-Yong
    • Korean journal of food and cookery science
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    • v.26 no.4
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    • pp.481-489
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    • 2010
  • This study was conducted to identify the optimal mixing ratios of turmeric powder or beet powder for the production of jelly. To establish the amount of turmeric powder or beet powder that could be added to jelly, physicochemical sensory characteristics and textural properties were measured. Specifically, jellies were prepared using gelatin containing turmeric powder or beet powder at ratios of 0.5, 1, 1.5 and 2%(w/w). Sensory evaluation of color, appearance, sweetness, chewiness, springiness, hardness, transparency and overall acceptability of jelly prepared using 0.5% turmeric powder resulted in a high score. Similarly, the color, appearance, sweetness, chewiness, springiness, transparency and overall acceptability of jelly prepared using 1% beet powder received a high score. Taken together, the results of this study suggest that turmeric and beet can be useful in the production of high quality jelly.

Comparative Analysis of Diversity Characteristics (γ-, α-, and β-diversity) of Biological Communities in the Korean Peninsula Estuaries (하구 순환 유지 여부에 따른 하구 주요 생물 군집별 다양성 특성 연구: 열린하구와 닫힌하구에서의 γ-, α- 및 β-다양성 비교)

  • Oh, Hye-Ji;Jang, Min-Ho;Kim, Jeong-Hui;Kim, Yong-Jae;Lim, Sung-Ho;Won, Doo-Hee;Moon, Jeong-Suk;Kwon, Soonhyun;Chang, Kwang-Hyeon
    • Korean Journal of Ecology and Environment
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    • v.55 no.1
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    • pp.84-98
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    • 2022
  • Estuary is important in terms of biodiversity because it has the characteristics of transition waters, created by the mixing of fresh- and seawater. The estuarine water circulation provides a variety of habitats with different environments by inducing gradients in the chemical and physical environment, such as water quality and river bed structure, which are ultimately the main factors influencing biological community composition. If the water circulation is interrupted, the loss of brackish areas and the interception of migration of biological communities will lead to changes in the spatial distribution of biodiversity. In this study, among the sites covered by the Estuary Aquatic Ecosystem Health Assessment, we selected study sites where changes in biodiversity can be assessed by spatial gradient from the upper reaches of the river to the lower estuarine area. The α-, γ- and β-diversity of diatom, benthic macroinvertebrates, and fish communities were calculated, and they were divided into open and closed estuary data and compared to determine the trends in biodiversity variation due to estuarine circulation. As results, all communities showed higher γ-diversity at open estuary sites. The benthic macroinvertebrate community showed a clear difference between open and closed estuaries in β-diversity, consequently the estuarine transects were considered as a factor that decreases spatial heterogeneity of their diversity among sites. The biodiversity trends analyzed in this study will be used to identify estuaries with low γ- and β-diversity by community, providing a useful resource for further mornitoring and management to maintain estuarine health.