No abstract

Aldrin, dieldrin, heptachlor, DDT, and methoxychlor were fed in the daily rations to dairy cows for 1 6 weeks. For varying periods afterwards, the cows were fed on insecticidefree rations. Milk samples were analyzed through both periods to determine the rate of accumulation and decline. The rates of accumulation for the various insecticides were as follows: cildrin (excreted as dieldrin) > dieldrin > DDT > heptachlor (excreted as heptachlor epoxide) > methoxychlor. CERTAIN CHLORINATED HYDROCARBON insecticides are excreted in milk at different rates per unit of intake. Many studies have contributed to the determination of their relative safety in actual usage.

of the 12-week period during which the cows were on dieldrin intake, ratios of dieldrin in fat to dieldrin in milk ranged Literature Cited(1) Claborn, . V., Wells, R. W., Agr.

Anthocyanins of northern crowberry (Empetrum nigrum ssp. hermaphroditum (Hagerup) Biicker) were extracted from the berry with acidified ethanol and purified with solvent extractions and ion exchange chromatography. Separation of anthocyanins and analysis of aglycones were carried out with HPLC. Glycosidic units were analyzed with GLC-MS. Twelve nonacylated monosides were found: glucoside, galactoside and arabinoside of delphinidin and petunidin, and galactoside and arabinoside of cyanidin, peonidin and malvidin. Three main anthocyanins were galactosides of cyanidin, delphinidin and malvidin which formed about 60% of total anthocyanins.