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Johan E. Hoff

Purdue University

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Featured researches published by Johan E. Hoff.

Analytical Biochemistry | 1981

An improved method for the gas chromatographic determination of methionine in proteins and crude plant materials

Gerasimos Apostolatos; Johan E. Hoff

Abstract Procedures for the determination of methionine in crude plant materials by means of cyanogen bromide digestion and gas chromatographic analysis of the digest were modified to achieve complete reaction, enhanced precision, and shortened reaction times. Oxides of methionine and derivatives of S-methylcysteine did not add to the values obtained for free and peptide-bound methionine.

Journal of Agricultural and Food Chemistry | 1980

Hydrophobic interaction in tannin-protein complexes

Hoon Il Oh; Johan E. Hoff; Glenn S. Armstrong; Lawrence A. Haff

Journal of Food Science | 1977

A METHOD FOR DETERMINATION OF TANNINS IN FOODS BY MEANS OF IMMOBILIZED PROTEIN

Johan E. Hoff; K. I. Singleton

Archive | 1986

Grain extraction milling

Li-Fu Chen; Johan E. Hoff

Journal of Food Science | 1986

Effect of Condensed Grape Tannins on the In Vitro Activity of Digestive Proteases and Activation of Their Zymogens

Hoon Il Oh; Johan E. Hoff

Journal of Food Science | 1969

Tomato Volatiles: Effect of Variety, Processing and Storage Time

P. E. Nelson; Johan E. Hoff

Journal of Food Science | 1968

Food Volatiles: Gas Chromatographic Determination of Partition Coefficients in Water‐Lipid Systems

P. E. Nelson; Johan E. Hoff

Journal of Food Science | 1987

pH Dependence of Complex Formation Between Condensed Tannins and Proteins

Hoon-Il Oh; Johan E. Hoff

Journal of Food Science | 1979

FRACTIONATION OF GRAPE TANNINS BY AFFINITY CHROMATOGRAPHY AND PARTIAL CHARACTERIZATION OF THE FRACTIONS

Hoon Il Oh; Johan E. Hoff

Journal of Food Science | 1985

Immobilized Condensed Tannins and Their Interaction with Proteins

Hoon Il Oh; Johan E. Hoff; Lawrence A. Haff

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Hoon Il Oh

SRI International

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Hoon-Il Oh

Purdue University

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Lawrence A. Haff

Purdue University

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P. E. Nelson

Purdue University

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Gerasimos Apostolatos

Purdue University

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K. I. Singleton

Purdue University

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Li-Fu Chen

Purdue University

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Marion P. Williams

Purdue University

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Philip E. Nelson

Purdue University

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