• Journal of the Korean Society of Food Culture
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• v.25 no.6
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• pp.839-846
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• 2010

This study was designed to investigate the effects of Korean Eucommia ulmodies Oliver tea extract on aluminum administered rats. Forty-eight male Sprague-Dawley rats (100${\pm}$10 g) were divided into the following six groups; control group, 3% E. ulmodies tea extract group, 1,000 and 2,000 ppm aluminum ($Al_2(SO_4)_3$ in distilled water) groups, and 1,000 and 2,000 ppm aluminum plus 3% E. ulmodies tea extract groups. The aluminum content in the rat tissues of the aluminum administered group was lower than that in the rat tissue of the aluminum group administered 3% E. ulmodies tea extract. Asparate aminotransferase and alanine aminotransferase levels increased in the aluminum-administered group but were lower in the 3% E. ulmodies tea extract group. Lactate dehydrogenase was lower in the 3% extract E. ulmodies teaaluminum group than that in the aluminum group. Cholinesterase was higher in the 3% E. ulmodies tea-aluminum group than that in the aluminum group. Plasma renin activity levels increased in the aluminum administration group, compared with the aluminum plus 3% E. ulmodies tea group. Plasma aldosterone levels increased in the aluminum administration group compared with the aluminum plus 3% E. ulmodies tea group. These results suggest that an extract of E. ulmodies tea in water has lowering effects on the accumulation of aluminum. It is believed that the E. ulmodies tea had some protective effects in the aluminum-administered rats, but the mechanisms remain obscure.

• Asian-Australasian Journal of Animal Sciences
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• v.30 no.7
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• pp.973-978
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• 2017

Objective: The aim of this study was to investigate the effects of simultaneous supplementation of laying hens with alpha-linolenic acid (ALA) resources (flax, perilla, and Eucommia ulmoides [E. ulmoides] seeds) and eicosapentaenoic acid/docosahexaenoic acid (EPA/DHA) resources (Schizochytrium sp.) on egg quality and n-3 polyunsaturated fatty acids (PUFA) profile. Methods: Dietary treatments were as follows: i) diet C (control diet); ii) diet F (diet C+10% flaxseeds); iii) diet P, (diet C+10% perilla seeds); iv) diet E (diet C+10% E. ulmoides seeds); v) diet A (diet C+1.5% microalage); vi) diet AF (diet C+10% flaxseeds+1.5% microalage); vii) diet AP (diet C+10% perilla seeds+1.5% microalgae); viii) diet AE (diet C+10% E. ulmoides seeds+ 1.5% microalage). Results: Egg weight, yolk weight and production ratio were not significantly affected by either algae or in combination with seeds (p>0.05). No significant difference was observed in ALA and DHA concentration in eggs between flaxseed, perila, and E. ulmodies seeds supplementation alone (p>0.05). N-3 PUFA in eggs was slightly improved by microalgae supplementation. The best supplementation, a combination of microalgae and perilla seeds, elevated (p<0.05) ALA from 19.7 to 202.5 mg/egg and EPA+DHA from 27.5 to 159.7 mg/egg. Highest n-3 PUFA enrichment (379.6 mg/yolk) was observed with supplementation of a combination of perilla seed and microalgae (362.2 mg/yolk), followed by a combination of flaxseed and microalgae (348.4 mg/yolk). The ALA, EPA, and DHA content obtained with a combination of microalgae and seeds surpassed the total sum of that obtained with microalgae or ALA-seeds alone. Conclusion: It is feasible to enrich eggs with n-3 PUFAs by perilla or E. ulmodies seeds instead of flaxseeds. Simultaneous supplementation of microalgae and seeds helped improve the transfer from EPA and docosapentaenoic acid into DHA.