Index Catalog // ScholarsArchive@OSU

The stability of ascorbic acid in bottled cranberry-based beverages under home-use conditions

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

The effect of erythorbic acid on the determination of ascorbic acid levels in selected foods by high performance liquid chromatography and spectrophotometry

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

Studies towards the total synthesis of (-)-kendomycin

Creator:: Smits, Helmars
Abstract:: Studies towards the total synthesis of (−)-kendomycin (1), a bacterial metabolite with a unique molecular architecture and pronounced biological activity, are described. These studies resulted in the synthesis of advanced intermediate 208, containing all of the carbon atoms of 1. A Dötz annulation between alkyne 122 and novel chromium carbenoid...
Resource Type:: Dissertation
Full Text:: ) p-TsNHNH2, EtOH, 4A MS, reflux 2) NaCNBH3, ZnCl2, EtOH reflux, 65% OMe OMe OMe MeO O HO

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

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

Prediction of meat quality characteristics using a two-factor quadratic central composite rotatable design with response surface analysis

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:: Figure Page 1.1. Central composite design (CCD) for three factors (A, 13 after Box, 1954, p. 34

Physiological effects of non-nutritive sugars on the survivorship and fecundity of Drosophila suzukii (Diptera: Drosophilidae)

Creator:: Tang, Siew Bee
Abstract:: Spotted wing drosophila (SWD), Drosophila suzukii, is an economically damaging pest on small fruits. The estimated economic impact is hundreds of millions of dollars annually in the U.S. alone, and increasing every year. Current control of SWD relies heavily on chemical insecticides which have many negative impacts on environmental and...
Resource Type:: Masters Thesis
Full Text:: would also like to thank Drs. Jana Lee, Vaughn Walton and Ronald Wrolstad for being in my committee. I

Perinatal and postweaning effects of the interaction between maternal ethanol ingestion and low dietary zinc in the rat

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

Perceptual characteristics of selected acidulants by different sensory and multivariate methods

Creator:: Rubico, Sonia Mendoza
Abstract:: The taste qualities of acidulants have not been studied in detail despite the fact that they are widely used by the food industry. Studies on characterizing the sensory properties of organic and inorganic acids are very limited. Reported studies are commonly on threshold, equi-sour and the time intensity values of...
Resource Type:: Dissertation
Full Text:: , Simon T., Mina M. and Nina P for sharing their time no matter how busy they were. I thank my Food

Interrelationships among changes in flavor and aroma, and composition of stored strawberry juice concentrate

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

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Creator:: Cortell, Jessica M.
Abstract:: In 2003 and 2004 vigor zones were delineated in two commercial vineyard sites based on vine growth variation to assess fruit and wine phenolic chemistry. In 2004, the effects of shading on the accumulation of phenolic compounds were also investigated. Model extractions were done from the shading experiment and the...
Resource Type:: Dissertation
Full Text:: and committee members including Dr. Ronald Wrolstad, Dr. Barbara Bond, Dr. Timothy Righetti and Dr

ScholarsArchive@OSU

The stability of ascorbic acid in bottled cranberry-based beverages under home-use conditions

The effect of erythorbic acid on the determination of ascorbic acid levels in selected foods by high performance liquid chromatography and spectrophotometry

Studies towards the total synthesis of (-)-kendomycin

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Prediction of meat quality characteristics using a two-factor quadratic central composite rotatable design with response surface analysis

Physiological effects of non-nutritive sugars on the survivorship and fecundity of Drosophila suzukii (Diptera: Drosophilidae)

Perinatal and postweaning effects of the interaction between maternal ethanol ingestion and low dietary zinc in the rat

Perceptual characteristics of selected acidulants by different sensory and multivariate methods

Interrelationships among changes in flavor and aroma, and composition of stored strawberry juice concentrate

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search