Two experiments were conducted to study the effect of the application of selenium on the selenium content of soybean and its products in two counties with selenium-deficient soil. Selenium-enriched soybean was produced by the application of sodium selenite and Se-enriched fertilizer. The selenium contents of soybeans, soybean protein and okra were determined by hydride-generation atomic fluorescence spectrometry. The results showed that the selenium contents of soybean, soybean protein, and okra were significantly increased by the application of sodium selenite and selenium-enriched fertilizer. Foliar application of selenium provided a higher efficiency for increasing the selenium content of soybean than soil application. Significant differences were found in that soybean cultivars exhibited different accumulation of selenium. There was no remarkable difference in soybean yield, soybean protein, and lipid between selenium and control. The selenium-enriched protein derived from selenium-enriched soybean could be used as a functional ingredient and soybean okra as a selenium-enriched feed for animals for increasing selenium intake.

Five compounds oxidizing canine erythrocytes were isolated from an aqueous ethanol garlic extract by sillica gel column chromatograpjhy and preparative thin-layer chromatography. On the basis of nuclear magnetic resonance, infraed spectroscopy, and mass spectrometry, they were identified as three known compounds: bis-2-propenyl trisulfide (1), bis-2-propentl tetrasulifide (2), and bis-2-propenyl pentasulfide (3) as well as two novel compounds, bis-2-propenyl tetrasulifide (4) and transsulfunic acid alyl ester 3-allyisulfanyl-allyl ester (5)-A mixture of compounds 1-3 and compounds 4 and 5 induced methemoglobin formation in canine erythrocyte suspension in vitro resulting in the oxidation of canine erythrocytes. These groups of characteristic organosulfur compounds contained in gralic probably contrbute to oxidations in blodd. The constituents of garlic have the potential to oxidize erythrocytes and hemoglobin, suggesting that foods containing quantities of garlic have the potential to oxidize erythrocytes and hemoglobin, suggesting that foodds containing quantities of garlic should be avoiede for feeding dogs.

Selenium fertilizer was foliar applied to determine the effects of antioxidant activity of seleniumenriched rice assessed by R,R-diphenyl-

To increase the selenium content of tea produced in areas of China poor in selenium, sodium seleite was added to tea garden soil or was sprayed onto tea leaves. Effects of selenium on green tea quality and the anino acid composition of tea protein were studied. Selenium-enriched green tea and poor selenium green tea were extracted with hot water (100℃) at a 1:50 ratio (w/v). The tea ldaf exracts were stored 30℃ for 12h, the colour changes of selenium-enriched green tea extact were more stable than with poor selenium green tea extract. The teas were packaged in polypropylene plastic bags and then stored at room temperature for 90d. The reduced ratio of vitamin C inselenium-enriched green tea was 21% compared with poor selenium fcontent green tea at 52%. These results demonstrated that selenium-enriched green tea produced a more desirable quality than poor selenium green tea. The total amino acid amounts, essential amino acid, methionine acid and cystine acid content of differetn selenium enriched green tea protein were increased by 8.3%-14.8%, 8.8%-14.8%, 6.0%-8.7%and 39%-96%, respectively, comparedwith the low selenium green tea. Green tea quality was raised by selenium tratment.