• Applied Biological Chemistry
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• v.41 no.3
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• pp.213-218
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• 1998

A bacterium with potent activity of pigment production and protease was isolated and identified as being Bacillus sp. CS-17. Cell growth, protease activity and pigment production of the strain reached to its maximum point after 24 hrs, 48 hrs, 72 hrs, respectively. The best pigment producing ability of Bacillus sp. CS-17 was shown on basal medium for pigment production added 1.0% soybean. The high effcient conditions for pigment production was obtained at culture of pH 8.5, $37^{\circ}C$ and 72 hours. Among the tested 5 gram positive strains and 6 gram negative strains, weak antibacterial activity of pigment concentrated extracts was appeared against growth of B. subtilis, P. aeruginosa, S. typhimurium, E. aerogenes, B. cereus, A. hydrophila.

• Korean Journal of Food Science and Technology
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• v.33 no.6
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• pp.808-811
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• 2001

Performance of pilot plant scale extraction and concentration of purple-fleshed sweet potato anthocyanin pigment was tested and the characteristics of pigment extracts and concentrates were investigated. Fifty kilograms of purple-fleshed sweet potato was extracted with 500 L of 1% citric acid in 20% ethanol. As a whole, extraction pattern of the large scale extraction was similar to that of the laboratory scale extraction. The extracted pigment solution was filtered twice with a bag filter and a winding type microfilter and the filtrate was concentrated by a large scale vacuum evaporator at $40^{\circ}C$ and 600 mmHg vac. The mean values of total optical density (TOD) of the extract and the concentrate were 6.53 and 120.45, respectively. Browning index (BI) and Degradation index (DI) of extract were 5.86 and 1.55 and those of concentrate were 5.89 and 1.56, respectively, which indicated that the pigments were not changed or degraded through the extraction and concentration process.

• Korean Journal of Food Science and Technology
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• v.38 no.2
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• pp.159-164
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• 2006

Volatile components of Phellinus linteus produced from different areas were collected by simultaneous steam distillation-solvent extraction method (SDE). Concentrated extracts analyzed and identified by GC and GC-MS showed musty and earthy characteristics. 2-Methylphenol, methoxy benzene, coumaran, azulene, ${\alpha}-cedrene,\;{\alpha}-longipinene,\;{\beta}-selinene,\;{\alpha}-selinene$, camphor, ${\gamma}-ionone,\;{\beta}-ionone$, phytol, and borneol not reported in other edible mushrooms, were identified and/or tentatively identified in P. linteus for the first time. Main volatile components of P. linteus (Busan-Jinsung: BJ) were phytol from chlorophyll and methoxy benzenes having musty odor. Volatile components of P. linteus (Jinju-Kumwhang: JK) resembled those of BJ, but with high concentration of phenylacetaldehyde contributing to flower-odor. P. linteus (Cheju-Gullim: CG) contained low concentration of methoxy benzenes, but high concentration of phenylacetaldehyde. Low concentrations of ${\gamma}-ionone\;and\;{\beta}-ionone$ were identified in three kinds of P. linteus. They appeared to have been produced from degradation of carotenoid, which suggests P. linteus contains a carotenoid pigment.