• Korean Journal of Agricultural Science
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• v.37 no.1
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• pp.69-72
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• 2010

This study explored the solid fat index (SFI) of structured lipids (SLs) synthesized by lipase-catalyzed (Lipozyme TLIM) interesterification using hydrogenated coconut oil (HCO), palm oil (PO) and palm stearin solid (PSS). SLs were produced using three blends of HCO/PO (60:40, w/w), HCO/PSS (40:60 and 60:40, w/w), and HCO/PO/PSS (32:48:18, w/w/w) to find a desirable confectionary fat by monitoring melting and crystallization behaviors of SFI of SLs using differential scanning calorimetry (DSC). SFI of HCO/PSS (60:40) and HCO/PO/PSS (32:48:18) at $25^{\circ}C$ were 70% and 68%, respectively. These results suggest that HCO/PSS (60:40) and HCO/PO/PSS (32:48:18) may be useful as potential SLs of a confectionary fat.

• Journal of the Korean Applied Science and Technology
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• v.41 no.2
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• pp.318-328
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• 2024

In this study, we enhanced the emulsifying power and solubilization of sucrose stearate (SS) by creating mixtures with sodium deoxycholate (SDOC) and PEG-40 hydrogenated castor oil (HCO). We employed the design of mixture experiments (DOME) methodology to identify the optimal composition of the mixture, and the impact of varying the mixture composition on its characteristics was examined through regression analysis of the experimental data. It was revealed that the emulsifying power for coconut oil was most improved when only SDOC was added to SS, and solubilization was most improved when only HCO was added, while the emulsifying power for cetyl ethylhexanoate (CEH) was most significantly improved when SDOC and HCO were added together. As a result of simultaneous optimization of three characteristics, emulsifying power for each of coconut oil and CEH, and solubilization, the optimal surfactant mixture composition was determined as SS 0.7939, SDOC 0.0586, and HCO 0.1475.

• Journal of Nutrition and Health
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• v.16 no.4
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• pp.287-295
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• 1983

Sprague Dawley pregnant rats were fed the hydrogenated coconut oil (P/S 0.02), corn-oil plus beef tallow (P/S 1.0), and corn-oil(P/S 4.0)diet during the 14 days of gestation and through lactation. At weaning, offsprings from each group were divided into two and corn- oil diet was switched to coconut and vice versa, while the other corresponding groups continud the same diet. Body, brain, and liver weights were measured on pups and the brains were analyzed for DNA and vitamin E. Serum and liver vitamin E levels were alse measured. Body weight of coconut group was significantly low throughout the 7 week period, but brain weight was significantly depressed before weaning. Liver weight showed similar pattern with the body weight. Serum vitamin levels increased before weaning, while tissue vitamin E increased after weaning. Serum vitamin E levels of switched groups were similar to that of P/S 1.0 group. Brain vitamin E levels per DNA of switched groups were also similar to that of P/S 1.0 group. And the effect of different dietary essential fatty acid levels on vitamin E in the brain during lactation found to be insignificant.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.3
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• pp.362-368
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• 2012

This study examined the fatty acid compositions of the fats extracted from 14 commercial coffee creamers and 11 instant coffee mixes, and evaluated the sensory characteristics of the coffees using different coffee creamers. The fat content in the 14 coffee creamers and 11 coffee mixes was 15~28% and 8~14%, respectively. The fats in 12 coffee creamers consisted of 34~45% lauric, 15~19% myristic and 10~18% palmitic acids. The fats in the other 2 coffee creamers consisted of 43% palmitic, 39% oleic and 10% linoleic acids. The fatty acids of the fats in the 11 coffee mixes were almost all saturated with lauric acid being the most abundant (44~45%). Coconut oil or palm kernel oil might have been used to manufacture the 12 coffee creamers and 11 coffee mixes, which had a higher lauric acid content. Palm oil (PO) might be a fat source for the other 2 coffee creamers. The sensory characteristics of five coffee mixes were evaluated based on their fatty acid compositions. The coffees with the creamers, which had a higher lauric acid content, were significantly more acceptable than those with a higher palmitic acid (p<0.05). The sensory evaluation of the coffees made with the creamers composed of hydrogenated coconut oil (HCO) and PO at different ratios showed that the acceptability increased with increasing HCO content. This suggests that PO may have a negative impact on the sensory characteristics.

• Journal of Nutrition and Health
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• v.36 no.8
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• pp.819-827
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• 2003

Linoleic acid [LA; 18: 2 (n-6)] is the most abundant polyunsaturated fatty acid in human skin. The exclusion of LA from diet induces epidermal hyperproliferation, which is reversible by the inclusion of LA in diet, and hence, LA is heralded as an essential fatty acid (EFA). Since safflower oil (SO) has been widely recognized as the major dietary source of LA and Arctii Fructus (Arctium lappa L.) is recently reported to contain high level of LA, we compared the antiproliferative effects of SO and Arctii Fructus in this study. Epidermal hyperproliferation was induced in guinea pigs by hydrogenated coconut oil (HCO) diet for 8 wk. During following 2 wk, EFA deficient guinea pigs were fed diets of safflower oil (group HS), water extract of Arctii Fructus (group AW) or organic extract of Arctii Fructus (group AO). Normal control group was fed SO containing diet (group SO) and EFA deficient group was fed HCO containing diet (group HCO) for 10 wk. Epidermal hyperproliferation was reversed in groups AO (55.9% of group HCO) and HS(74.1% of group HCO). However, the thymidine incorporation into epidermal DNA of group HS was greater than of normal control group SO. Epidermal hyperproliferation was not reversed in group AW. The accumulations of LA into phospholipids and ceramides, and of 13-hydroxyoctadecadienoic acid (13-HODE), the potent antiproliferative metabolite of LA in the epidermis of group AO were greater than of group HS. In contrast, the de novo synthesis of ceramides, the major lipids maintaining epidermal barrier, did not differ between all of groups. Together, our data demonstrate that organic extract of Arctii Fructus is more prominent than safflower oil in reversing epidermal hyperproliferation by inducing the higher accumulations of LA and 13-HODE in the epidermis of guinea pigs.

• Journal of Nutrition and Health
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• v.16 no.2
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• pp.89-96
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• 1983

Weanling male rats were fed a semi - synthetic diet containing either 10% corn oil, or 10% hydrogenated coconut oil (HCO) for 5 weeks. They were analyzed for plasma, liver, heart, testis, kidney and adrenal lipid compositions ; total lipids, total cholesterol, phospholipid, and triglyceride. The rats fed essential fatty acids deficient diet grew comparably with corn oil group and did not any dermal symptoms of EFAs deficiency. The most remarkable changes found in lipids of rats in experimental groups were ; (1) an increase in the concentration of plasma TG and liver TG in HCO group. (2) a decrease in the concentration of plasma PL and an increase in the concentration of testis PL of HCO group. (3) A decrease in cholesterol level of testis, kidney and adrenal of HCO group. Although this study did not show the profound EFA deficiency in weanling rats, this study showed the possibility of early nutrition affecting subsequent development in various tissues.

• Journal of Nutrition and Health
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• v.48 no.4
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• pp.319-326
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• 2015

Purpose: Borage oil (BO) and safflower oil (SO) are efficacious in reversing epidermal hyperproliferation, which is caused by the disruption of epidermal barrier. In this study, we compared the antiproliferative effect of dietary BO and SO. Altered metabolism of ceramide (Cer), the major lipid of epidermal barrier, was further determined by measurement of epidermal levels of individual Cer, glucosylceramide (GlcCer), and sphingomyelin (SM) species, and protein expression of Cer metabolizing enzymes. Methods: Epidermal hyperproliferation was induced in guinea pigs by a hydrogenated coconut diet (HCO) for 8 weeks. Subsequently, animals were fed diets of either BO (group HCO + BO) or SO (group HCO + SO) for 2 weeks. As controls, animals were fed BO (group BO) or HCO (group HCO) diets for 10 weeks. Results: Epidermal hyperproliferation was reversed in groups HCO + BO (67.6% of group HCO) and HCO + SO (84.5% of group HCO). Epidermal levels of Cer1/2, GlcCer-A/B, and ${\beta}$-glucocerebrosidase (GCase), an enzyme of GlcCer hydrolysis for Cer generation, were higher in group HCO + BO than in group HCO, and increased to levels similar to those of group BO. In addition, epidermal levels of SM1, serine palmitoyltransferase (SPT), and acidic sphingomyelinase (aSMase), enzymes of de novo Cer synthesis and SM hydrolysis for Cer generation, but not of Cer3-7, were higher in group HCO + BO than in group HCO. Despite an increase of SPT and aSMase in group HCO + SO to levels higher than in group HCO, epidermal levels of Cer1-7, GlcCer-A/B, and GCase were similar in these two groups. Notably, acidic ceramidase, an enzyme of Cer degradation, was highly expressed in group HCO + SO. Epidermal levels of GlcCer-C/D and SM-2/3 did not differ among groups. Conclusion: Dietary BO was more prominent for reversing epidermal hyperproliferation by enhancing Cer metabolism with increased levels of Cer1/2, GlcCer-A/B, and SM1 species, and of GCase proteins.