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Investigating the effects of temperature on secondary metabolism in Vitis vinifera L. cv. merlot berries

Creator:: Cohen, Seth D.
Abstract:: Grapes (e.g. Vitis vinifera L.) are one of the more important fruit crops from an economic standpoint with world market values over 550 million US dollars in 2007 and 2008, second to apples (United States Department of Agriculture). While a satisfactory level of ripeness is of primary concern, the quality...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Seth D. Cohen for the degree of Doctor of Philosophy in Food

Interactions of Trichoderma reesei exo-acting cellulases with p-aminophenyl 1-thio-β-D-cellobioside

Creator:: Piyachomkwan, Kuakoon
Abstract:: Cellulolytic enzymes capable of efficiently degrading crystalline cellulose are a complex mixture of endo- (endoglucanases) and exo-acting (cellobiohydrolases) enzymes. One approach to separating these enzymes is affinity chromatography. A new ligand, p-aminophenyl l-thio-β-D-cellobioside (APTC), is introduced for this purpose. The property of APTC in affinity chromatography is demonstrated using Trichoderma...
Resource Type:: Dissertation
Full Text:: -aminophenyl l-thio-/?-D-cellobioside (APTC), is introduced for this purpose. The property of APTC in

Enzymatic formation and influence of variety, maturity and processing on volatiles of the carrot, Daucus carota L.

Creator:: Heatherbell, D. A. (David A.)
Resource Type:: Dissertation
Full Text:: CARROT, DAUCUS CAROTA L. Abstract approved: ,. =_^ . Dr. R. E. Wrolstad Carrot

Multiple forms of carboxylesterases in the green bean (Phaseolus vulgaris L.) and pea (Pisum sativum L.)

Creator:: Veerabhadrappa, Patnagere Siddaveera Sheety
Abstract:: Esterase activity of an aqueous extract of the green bean was separated into fourteen bands, while aqueous extracted pea esterases revealed seven bands, by polyacrylamide-gel electrophoresis. The fourteen bands of bean esterase activity formed three groups; slow, intermediate and fast moving. α-Naphthyl acetate, propionate, and n-butyrate and AS naphthol acetate...
Resource Type:: Dissertation
Full Text:: D Origin Figure 1. Esterase zymogram of bean (Phaseolus vulgaris L. ). Stained with: A

Aroma comparison of 'Marion' (Rubus sp. L.) and 'Thornless Evergreen' (R. laciniatus L.) blackberries

Creator:: Klesk, Keith
Abstract:: 'Marion' and 'Thornless Evergreen' blackberry volatiles were analyzed by capillary gas chromatography-flame ionization detection (GC-FED) and GC-mass spectrometry (GC-MS). Based on total percentage of FID area 'Thornless Evergreen' contains significantly more alcohols, hydrocarbons, and phenols than the 'Marion'; 'Marion' contains more acids and esters. Both cultivars contained comparable amounts of...
Resource Type:: Dissertation
Full Text:: COMPARISON OF 'MARION' (Rubus sp. L.) AND 'THORNLESS EVERGREEN' (R. laciniatus h.) BLACKBERRIES Abstract

Structure and conformation of red radish (Raphanus sativus L.) anthocyanins and their effect on color and pigment stability

Creator:: Giusti Hundskopf, Maria Monica
Abstract:: Red radish (Raphanus sativus L.) anthocyanins were extracted from liquid nitrogen powdered epidermal tissue using acetone and chloroform and isolated using C-18 resin. Chemical structure and conformation of major pigments were elucidated by 1-D and 2-D NMR, Mass Spectroscopy, HPLC, and spectral analyses. Two novel di-acylated anthocyanins, pelargonidin 3-0-[2-0-(β-D-glucopyranosyl)-(6-0- trans-p-coumaroyl-...
Resource Type:: Dissertation
Full Text:: , 1998. Title: Structure and Conformation of Red Radish (Raphanus sativus L.) Anthocyanins and

Heat induced compounds in milk

Creator:: Scanlan, Richard A.
Abstract:: Milk, preheated at 82°C for 30 minutes, was heated to 146°C for four seconds (UHT-treated) and cooled to 5°C in a tubular heat exchanger. Immediately after heat treatment, 20 gallons of heated milk were vacuum distilled at 30°C in a semi-continuous, reduced pressure glass apparatus. Twenty gallons of non-heated milk...
Resource Type:: Dissertation
Full Text:: Ph. D. (Degree) in Food Science presented on /Yo V C tr) p^L r P- ; / f6~7 (Major) (Date

The use of liposomes as encapsulating agents for feeding juvenile Pacific oysters (Crassostrea gigas)

Creator:: Parker, Robert S.
Abstract:: The ingestion, uptake, and metabolism of liposomes by juvenile Pacific oysters (Crassostrea gigas) were studied by several methods in an effort to assess their potential as encapsulating agents. Liposomes composed of egg phosphatidylcholine-cholesterol-stearylamine (7:1:2) formed readily and appeared stable in 20°/oo seawater. Radiotracer studies with liposomes made with ¹⁴C-labeled cholesterol...
Resource Type:: Dissertation
Full Text:: ) Abstract approved: r D. P. Selivonchick The ingestion, uptake, and metabolism of liposomes by

Formation of N-nitrosamines from the nitrosation of spermidine and spermine

Creator:: Hildrum, K. I. (Kjell Ivar), 1940-
Abstract:: The reactions between sodium nitrite and the polyamines spermidine and spermine were investigated. When reacted at 80°C for 1 hr at pH 3.5 with a 1:3 molar ratio of amine groups to sodium nitrite, five volatile nitrosamines were identified as products in the nitrosation of spermidine. 3HC1, and two volatile...
Resource Type:: Dissertation
Full Text:: . D, L. MacDonald; who contributed their time and helpful suggestions. The assistance of other

Purification and characterization of polyphenol oxidases of Royal Anne cherries (Prunus avium L.)

Creator:: Benjamin, Namrod David
Resource Type:: Dissertation
Full Text:: OXIDASES OF ROYAL ANNE CHERRIES (PRUNUS AVIUM L. ) Abstract approved: ^^^- - -- ■ -■ , Morris

ScholarsArchive@OSU

Investigating the effects of temperature on secondary metabolism in Vitis vinifera L. cv. merlot berries

Interactions of Trichoderma reesei exo-acting cellulases with p-aminophenyl 1-thio-β-D-cellobioside

Enzymatic formation and influence of variety, maturity and processing on volatiles of the carrot, Daucus carota L.

Multiple forms of carboxylesterases in the green bean (Phaseolus vulgaris L.) and pea (Pisum sativum L.)

Aroma comparison of 'Marion' (Rubus sp. L.) and 'Thornless Evergreen' (R. laciniatus L.) blackberries

Structure and conformation of red radish (Raphanus sativus L.) anthocyanins and their effect on color and pigment stability

Heat induced compounds in milk

The use of liposomes as encapsulating agents for feeding juvenile Pacific oysters (Crassostrea gigas)

Formation of N-nitrosamines from the nitrosation of spermidine and spermine

Purification and characterization of polyphenol oxidases of Royal Anne cherries (Prunus avium L.)

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