• Preventive Nutrition and Food Science
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• 제15권2호
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• pp.120-129
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• 2010

To elucidate the composition of extractive nitrogenous components in the fresh Capsosiphons fulvescens cultured off the southern coast of Korea, and to determine the monthly variation of these nitrogenous components, extract samples collected monthly from December to March at Jangheung-gun, Jeonnam Province were analyzed for total nitrogen, free and combined amino acids, ATP and related compounds, betaines, trimethylamine oxide (TMAO) and trimethylamine (TMA). The content of extractive nitrogen was 1,090~1,233 mg/100 g on dry basis. The number of 21~25 ninhydrin-positive substances was detected in the analysis of free amino acids, and their total amount was 3,710~4,788 mg/100 g on dry basis. Among them, free proline, asparagine, glutamic acid, alanine, taurine and glutamine were found to be abundant. The combined amino acids amounted to 1,573~2,121 mg/100 g in total and the total amount of ATP and related compound was 33.8~84.0 mg/100 g ($1.06{\sim}2.46\;{\mu}mol/g$) on dry basis. Betaine, glycinebetaine, $\beta$-alaninebetaine, $\gamma$-butyrobetaine, homarine and trigonelline were detected in most of samples. Levels of free and combined amino acids, ATP and related compounds fluctuated from sample to sample, with their contents higher in December and January and lower in March.

• Food Science and Biotechnology
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• 제16권4호
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• pp.659-662
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• 2007

In order to determine the optimal storage conditions of Capsosiphon fulvescens (maesaengi), 2 types of wash solutions (distilled water and seawater) and storage temperatures (-20 and $-80^{\circ}C$) were evaluated for the effectiveness of microbial growth inhibition and the changes of texture, color, and proximate composition. Thawed samples that had been washed with seawater and stored at $-20^{\circ}C$ for 50 days showed a 1.1-fold increase in hardness compared to the initial hardness of the sample ($1.9{\times}10^5\;dyne/cm^2$). There was no change in moisture, ash, or crude lipid during storage at -20 and $-80^{\circ}C$ for 60 days, while there was a $1{\pm}0.2%$ decrease in crude protein content for the control during storage at both -20 and $-80^{\circ}C$ for 60 days. In conclusion, the recommended optimal storage conditions for retaining the quality of C. fulvescens are: temperatures at or below $-20^{\circ}C$ and washings with either distilled water or seawater for inhibiting microbial growth, temperatures at or below $-20^{\circ}C$ and a washing with seawater to prevent reductions in hardness, and a temperature of $-80^{\circ}C$ and washings with either distilled water or seawater to protect against color changes.

• 생명과학회지
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• 제21권6호
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• pp.811-818
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• 2011

해조류 매생이의 기능성을 증명하기 위하여 열수 또는 에탄올 추출하여 여러 가지 생리활성에 대하여 조사하였다. 우선, 매생이 열수와 에탄올 추출물의 항산화능을 조사하기 위하여 DPPH radical 소거능, SOD 유사활성을 측정하였다. 그 결과, 매생이 열수와 에탄올 추출물의 농도가 증가함에도 불구하고 낮은 증가율을 보였는데, 10 mg/ml에서 DPPH radical 소거능은 각각 10.8, 62.4%, SOD 유사활성은 각각 13.8, 27.1%로 나타났다. 항고혈압 활성 측정에서는 1 mg/ml의 매생이 열수와 에탄올 추출물이 각각 5.9, 49.7%의 활성을 보여 비교적 높은 효능이 매생이 에탄올 추출물에서 나타났다. 매생이 열수와 에탄올 추출물의 혈당 강하 효과는 ${\alpha}$-glucosidase 저해능 분석으로 측정하였는데, 1 mg/ml 농도의 매생이 열수와 에탄올 추출물은 각각 1.4, 67.3%로써 비교적 높은 효능을 매생이 에탄올 추출물에서 보였다. 매생이의 숙취해소 효능은 ADH와 ALDH 활성증진에 매생이 열수와 에탄올 추출물이 미치는 영향을 조사함으로써 증명하고자 하였다. 그 결과, 매생이 열수와 에탄올 추출물의 농도가 증가함에도 불구하고 알콜 분해능 증가율이 낮게 나타났으며, 심지어 acetaldehyde 분해능은 관찰되지 않았다. Elastase 억제 효능 분석에서는 매생이 열수와 에탄올 추출물 10 mg/ml에서 각각 75.9, 51.2%로 나타났다.