• The Korean Journal of Mycology
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• v.8 no.1
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• pp.25-28
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• 1980

Attempts were made to investigate sterol components of Calvatia saccatum (Vahl.) Fr. which grows wildly in Korea. Its carpophores were collected in Gyeong Gi Province and extracted with chloroform and methanol. Two compounds were isolated from the extract and one of these compounds was identified as ergosterol by TLC, GLC and chemical tests.

• The Korean Journal of Mycology
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• v.8 no.2
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• pp.101-106
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• 1980

To investigate constituents of Lampteromyces japonicus (Kawam.) Singer which grows wildly in Korea, the carpophores of the fungus were collected in Gyeong Gi. Province and analyzed for sterols and amino acids by gas chromatography and an amino acid autoanalyzer. The results showed that it contained stigmasterol and ergosterol and that it contained eleven free amino acids. These free amino acids were also determined quantitatively. Furthermore, sixteen amino acids were identified in the total amino acid fraction of the fruiting body.

• The Korean Journal of Mycology
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• v.6 no.1
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• pp.53-56
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• 1978

The carpophores of Mycroporus affinis (Blume et Nees) Kuntze which grows wildly in Korea were collected in the Gyeong Gi Province and extracted with chloroform and methanol. Two compounds were isolated from the extract and one of these compounds was identified as ergosterol by T.L.C., G.L.C. and chemical tests.

• The Korean Journal of Mycology
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• v.7 no.2
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• pp.87-90
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• 1979

Attempts were made to investigate sterol components of Schizophyllum commune Fr. which is one of medicinal fungi and grows wildly in Korea. Its carpophores were collected in Mountain Gwanak and extracted with chloroform and methanol. A sterol was isolated and identified as ergosterol by TLC, GLC and chemical tests.

• The Korean Journal of Mycology
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• v.7 no.2
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• pp.83-85
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• 1979

Attempts were made to investigate the sterol components of Xerocomus badius Fr. Kuhner ex Gilbert which grows wildly in Korea. Its carpophores were collected in Gyeong-Gi Province and extracted with chloroform and methanol. Two compounds were isolated from the extract and one of these compounds was identified as ergosterol by TLC, GLC and chemical tests.

• YAKHAK HOEJI
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• v.23 no.1
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• pp.51-55
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• 1979

"Ha-Neul-Ta-Ri" (Trichosanthes kirilowii Max., Cucurbitaceae) cultivated in Korea and used in popular medicine, was investigated for sterol composition of the seed oil. This seed oil contains unusual sterols having ${\delta}^{7, 22}_-$, ${\delta}^{7, 24}_-$ and ${\delta}^{7, 22, 25}_-$ di and trienols. ${\delta}^{7, 22}_-$ Stigmastadienol and ${\delta}^{7, 22, 25}_-$ Stigmastatrienol were identified as the major sterols in the seed oil of Trichosanthes kirilowii by gas loiquid chromatographic analysis. The results showed that contents of the seed sterols were campesterol 1.0-1.2%, stigmasterol 1.5-1.7%, ${\delta}^{7}_-$ campstenol 0.6-0.8%, sitosterol 10.6-11.4%, ${\delta}^{7, 22}_-$ stigmastadienol 39.1-41.8%, ${\delta}^{7, 22, 25}_-$ stigmastatrienol 28.9-29.3%, ${\delta}^{7, 25}_-$ stigmastadienol 14.9-15.5% and ${\delta}^{7, 24}_-$ stigmastadienol 0.7-1.0%.

• YAKHAK HOEJI
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• v.22 no.2
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• pp.87-90
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• 1978

"Bija"(Torreya nut), a tree belonging to the Torreyaceae family, is cultivated in Jae Joo Do and Jun Ra Do, Korea. The seed of Torreya nucifera, which has been widely used as folkmedicine in the treatment of tapeworm infestation, was examined on the sterol composition determined by gas liquid chromatography and thin layer chromatography on the preparative plates. Sterols were obtained from the nonsaponifiable matters of ether extract of the seed. It was noted that .betha.-sitosterol was the major sterol in the nut. The results showed that contents of sterols were campesterol 3.15-3.75%, stigmasterol 5.38-5.67%, $\beta$-sitosterol 85.61-86.28% and ${\delta}^{7}$-sterol 4.91-5.19% by gas liquid chromatography.

• Journal of the Korean Applied Science and Technology
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• v.33 no.3
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• pp.560-567
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• 2016

Acid-activated clays (SUPER-DC, DC-A3, and P1) are used for the bleaching of cold-pressed rapeseed oil. In this study we tested the bleaching performance of cold-pressed rapeseed oil according to the different reaction time (20, 40, 60, 80 min) and temperature (40, 80, $120^{\circ}C$). Oil color (lightness, redness, yellowness), pigments (chlorophyll A and carotenoid content) and quality properties (fatty acid composition, tocopherols (${\alpha}$, ${\beta}$, ${\gamma}$, ${\delta}$), and plant sterols (${\beta}$-sitosterol, campesterol, stigmasterol) content) were analyzed. The results showed that bleaching of cold-pressed rapeseed oil with 2% acid-activated clays at $40^{\circ}C$ for 20 min, brightness (L) increased, but redness (a) and yellowness (b) decreased. Bleaching of cold-pressed rapeseed oil with 2% DC-SUPER at $40^{\circ}C$ removed chlorophyll A and carotenoids pigments significantly. In addition, about 50% of total tocopherol content in cold-pressed rapeseed oil was reduced by bleaching. Originally total tocopherol content was 46.62mg/100g in cold-pressed rapeseed oil. But after bleaching, total tocopherol content was 12.67mg/100g (20 min bleaching), 15.31mg/100g (40 min bleaching), and 13.56mg/100g (60 min bleaching). However plant sterols content in cold-pressed rapeseed oil remained unchanged by bleaching. Overall, acid-activated clays were useful for the bleaching of pigmented rapeseed oil.

• Journal of the Korean Applied Science and Technology
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• v.34 no.2
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• pp.315-326
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• 2017

This study was investigated the biochemical mechanism on reducing blood lipids in second-generation rats fed diet with different omega 6 to omega 3 fatty acid ratio. The experiment treatment groups were classified into the groups with the omega 6 to omega 3 ratios of 0 (control group), 1:1, 8:1, and 19:1, respectively. The levels of the blood triglyceride, total cholesterol, low density lipoprotein-cholesterol (LDL-C), aspartate aminotransferase (AST), alanine aminotransferase (ALT) and glucose were lowest in the group with the omega 6 to omega 3 ration of 1:1. The levels of high density lipoprotein-cholesterol and phospholipid were highest in the group with the omega 6 to omega 3 ration of 1:1. The HMG-CoA reductase activity was suppressed in the groups with the omega 6 to omega 3 ratio of 1:1 and 8:1 compared with that in the control group, but the excretion of sterol through feces was promoted. The blood omega 6 to omega 3 ratio decreased in a concentration-dependent manner depending on the increase in the omega 6 to omega 3 ratio within the ingested diet. The results of this study demonstrated a new finding that when the parent generation and second-generation rats ingested the diet with the omega 6 to omega 3 ratio of below 8:1, harmful lipids in the blood were reduced, the liver functions were maintained, and the growth was promoted due to the nutrient metabolism activation mechanism.

• Food Science and Preservation
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• v.12 no.6
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• pp.600-607
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• 2005

This study was conducted to prepare high quality grape seed oils by solvent extraction and chemical refining process. Additionally, quantitative analysis of several functional components in grope seed was carried out to compare quality characteristics of grape seeds from grapes grown by conventional and organic agricultural practices. There are no significant differences in several functional constituents of grape seeds between conventionally cultivated- and organically cultivated-grapes, although some functional compositions of grape seeds are different between two cultivation methods. The dried grape seed was pretreated with roasting heating for 5 min, milled and then extracted twice with n-hexane under reflux at $50^{\circ}C$ for overnight, followed by filtration and evaporation. The crude grape seed oil was successively purified by degumming with $0.1\%\;H_3PO_4$, deaciding with $20\%\;NaOH$, and then decoloring and deodorization by a steam distillation, and thereby producing purified grape seed oil(yield: $5.0\%/dried$ grape seed). Physicochemical characteristics of the purified grape seed oil were comparable to those of the imported grape seed oils.