37 



Colo. 



Conn. 



Hawaii 



Mass, 



Mich, 



Mont, 



Isolation and Identification of the Polyphenols of Crop 

 Plants and a Study of Their Properties and Biochemical 



if 



Functions^ To (1) quantitatively estimate polyphenolic con- 

 stituents of crop plants with reference to plant parts used 

 for food; (2) separate and identify principal polyphenols of 

 specific plant species and varieties; (3) study and consider 

 properties of polyphenols separated and identified; and (h) 

 establish various biochemical functions for polyphenols 

 isolated, 



Bot., Chem. 92 Coop. USDA 



Components of Cigar Tobacco Leaf "Which Contribute to 

 Market Quality, in Particular to Odor , (1) If possible, 

 identify chemically substances in fermented tobacco which give 

 its characteristic odor. (2) Study manner in which these sub- 

 stances arise and how the quantity present can be altered or 

 controlled, 



Biochem., PI. Path. 206 



The Form of Nitrogen in Grasses Following Nitrogen Ferti- 

 lization . To (1) determine forms and distribution of N in 

 Panicum and Napier grasses, and (2) study relationship of N to 

 phosphorus and potash in Napier grass. 



Soils, Agr. Chem. 622.5 



The Chemistry of Raspberry Canes in Relation to Cold 

 Hardiness. Learn (1) dehydration intensities necessary to 

 cause injury to a .significant number of cells of raspberry 

 canes; (2) water sorption isotherms on cane tissue during 

 winter season and degree and extent of hysteresis; (3) seasonal 

 variations in content of soluble protein, amino N, pectic sub- 

 stances, etc. (U) Try to find relation between dehydration 

 intensities, sorption data, and chemical composition. 



Chem. 97 



The Chemical Determination of the Carbohydrate Fraction 

 in Various Forage Crops and Their Isolation and Identification , 

 (l) Investigate suitability of existing chemical methods for 

 learning various carbohydrates in forage crops and devise new 

 methods whenever necessary, (2) Make systematic chemical study 

 of carbohydrates in forage crops consumed by ruminants. (3) 

 Investigate environmental conditions influencing composition 

 of forages. (U) Make digestion trials on forages when feasible. 



Agr. Chem., Dairy Indus., PI. Physiol. 811 (NC-25) 



Determination of Magnesium in Plant Materials by Flame 

 Spe ctr ophotometry^ To (1) determine quantitatively effects of 

 common anions on magnesium flame intensities; (2) determine 

 quantitatively effects on common cations on magnesium flame 

 intensities; and (3) incorporate results obtained into an 

 effective, rapid procedure for routine determination of mag- 

 nesium in plant materials. 



Chem. 933 



