Index Catalog // ScholarsArchive@OSU

Creator:: Lundahl, David S.
Abstract:: Sensory evaluation and instrumental methods were applied to the evaluation of strawberry juice concentrate (68°Brix) stored at 20°C which had been produced both commercially (C-SJC) and in a pilot plant (SJC). Sensory evaluation included taste and aroma ratings by intensity scaling and time-intensity of taste, and visual colorimetry by matching...
Resource Type:: Dissertation
Full Text:: . Mina McDaniel contributed to this text by serving as my major advisor. Dr. Ronald Wrolstad was a key

Creator:: Wesche-Ebeling, Pedro Alfredo E.
Abstract:: Polyphenol oxidase (PPO) from strawberries was purified, partially characterized, and used to study its role in the degradation of anthocyanin pigments. The extraction method included the use of a buffered solution containing the phenolic binders Polyclar AT and Amberlite XAD-4. Addition of Triton X-100 resulted in an increase of the...
Resource Type:: Dissertation
Full Text:: concerning this research, and to Dr. Ronald E. Wrolstad and Dr. Daryl G. Richardson for their help and for

Creator:: Tuan, Shenhsiu
Abstract:: A high performance liquid chromatography (HPLC) procedure using a LiChrosorb-NH₂ column and a eluant buffer of 75:25 (v/v) of acetonitrile:0.05 M KH₂P0₄, pH 5.95, was developed for the successful separation and determination of ascorbic and erythorbic acids in selected food samples. Application of the method, which is sensitive, rapid and...
Resource Type:: Masters Thesis
Full Text:: graduate committee: Dr. Ronald E. Wrolstad, Dr. Donald L. MacDonald, Dr. Ellen K. Pikitch. I extened my

Creator:: Young, San Land
Abstract:: A commercially important polyelectrolyte, xanthan, was chosen for a systematic analysis of the relationship between molecular conformation and surface properties. In the first study the effects of ionic strength, xanthan concentration and temperature on the xanthan molecular conformation were investigated by potentiometric titration. The effects of the same factors and...
Resource Type:: Masters Thesis
Full Text:: his encouragement and guidance. I would also like to thank my graduate committee: Dr. Ronald E

Creator:: Wong, Geoffrey K.
Abstract:: Commercially bottled, vitamin C-fortified, cranberry juice cocktail and cranberry-apple (cranapple) juice drinks were stored at 5°C under simulated home-use conditions. Ascorbic acid (AA) and dehydroascorbic acid (DHA) levels were evaluated over a period of seven days by high performance liquid chromatography (HPLC). Total vitamin C content was also determined by...
Resource Type:: Masters Thesis
Full Text:: . Ronald E. Wrolstad, Dr. Wilbert Gamble, and Dr. Carolyn A. Raab. I extend my gratitude to Dr. Richard

Creator:: Martin, David C. (David Christopher), 1949-
Resource Type:: Masters Thesis
Full Text:: W.S. Mok for serving as the graduate council representitive and Dr. Ronald E. Welty for agreeing to

Creator:: Yeh, Lee-chuan C.
Abstract:: This research was designed to study the perinatal and postweaning effects of the interaction between ethanol and low dietary zinc during gestation and lactation in the rat. Pregnant rats were fed liquid diets containing either 2 or 10 μg zinc/ml with or without 30% of kcal from ethanol throughout gestation...
Resource Type:: Dissertation
Full Text:: J.Woodburn, Dr. David R. Thomas, Dr. Ronald E. Wrolstad, and Dr. Paul Kopperman, for their time and energy

Creator:: Zondagh, Irene Beryl
Abstract:: The objectives were to investigate the ability of a two-factor central composite rotatable design (CCRD), using cooking temperature (CT) and endpoint temperature (ET) as independent variables, to predict selected chemical, physical and sensory meat quality characteristics considered important by the industry, researcher and consumer alike. Response surface analysis (RSA) was...
Resource Type:: Dissertation
Full Text:: point), saddles (C=saddle point), stationary ridges (D=stationary ridge system), and rising ridges (E

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