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New development of beta-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties, New development of β-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties

Creator:: Jung, Jooyeoun
Abstract:: β-chitin/chitosan extracted from newly utilized jumbo squid (Dosidicus gigas) pens were investigated in respect to their physicochemical properties, polymeric structures, deacetylation and depolymerization characteristics, and antioxidant and antibacterial activities. These functional properties were further compared with α-chitin/chitosan prepared from shrimp shells. Due to the low mineral content (< 1%) and...
Resource Type:: Dissertation

Methods of extraction and characterization of polyphenol oxidase from d'Anjou pears (Pyrus Communis L.)

Creator:: Smith, Denise Myrtle
Abstract:: Using phenolic scavengers different methods were examined to determine the optimum conditions for extracting polyphenol oxidase (PPO) from d'Anjou pears. Efficiency of the extraction was evaluated based on browning of the extract, PPO activity per g of pear tissue, absorption scan of 410 nm to -240 nm, and the isozyme...
Resource Type:: Masters Thesis
Full Text:: radicals by the enzyme polyphenol oxidase (EC 1.14.8.1). The quinones produced are further oxidized and

Development of anthocyanins and proanthocyanidins in Pinot noir grapes and their extraction into wine

Creator:: Pastor del Rio, Jose L.
Abstract:: Color stability and mouth feel quality are two of the most important aspects of red wine quality. Anthocyanins and proanthocyanidins are responsible for these attributes and it has been shown that weather conditions during the growing season and grape maturity can effect these components in wine. However, investigations into proanthocyanidin...
Resource Type:: Masters Thesis

Interactions between Oenococcus oeni and Brettanomyces bruxellensis during winemaking and consequences for wine quality

Creator:: DuBois, Aubrey E.
Abstract:: The growth of Brettanomyces bruxellensis is a major cause of wine spoilage due tothe production of the volatile phenols 4-ethylphenol (4-EP) and 4-ethylguaiacol (4-EG), derivatives of p-coumaric acid and ferulic acid. During the winemaking process,some microorganisms can impact the concentration of the 4-EP precursors pcoumaricand coutaric acid (tartaric acid-esterified p-coumaric...
Resource Type:: Masters Thesis
Full Text:: -ethylcatechol (4-EC). 4-EC has only recently been associated with Brettanomyces contamination (Oelofse et al

Extraction and partial characterization of strawberry polyphenol oxidase

Creator:: Wesche Ebeling, Pedro Alfredo E.
Resource Type:: Masters Thesis
Full Text:: . LITERATURE REVIEW POLYPHENOL OXIDASE The enzyme o-diphenol:oxygen oxidoreductase (EC 1.10.3.1) is also

Free Monoterpene Isomer Profiles in White Wine : Effect of Grape Variety, Region and Style and Impact on Odor Perception

Creator:: Song, Mei
Abstract:: Monoterpenes are important volatile compounds to the aroma of many white wines. Many monoterpenes are chiral and found in wine as different isomers. These isomers (also known as enantiomers) are non-superimposable mirror images of each other, maintain the same molecular structure and in many instances possess different sensory characteristics. Much...
Resource Type:: Dissertation

Factors Affecting the Efficacy of Depuration for Decreasing Vibrio parahaemolyticus Contamination in Pacific Oysters (Crassostrea gigas)

Creator:: Hou, Yishu
Abstract:: Vibrio parahaemolyticus is a foodborne pathogen recognized as the leading cause of acute gastroenteritis associated with consumption of raw and undercooked seafood, particularly raw oysters, with major symptoms of nausea, vomiting, abdominal cramps and diarrhea. It is estimated that 45,000 cases of V. parahaemolyticus infection occur each year in the...
Resource Type:: Masters Thesis
Full Text:: sum of the concentration of PCDD/Fs and dl-PCBs. The European Commission (EC) has introduced maximum

Mercury levels in albacore tuna (Thunnus alalunga) and the effects of canning

Creator:: Rasmussen, Rosalee S.
Abstract:: Mercury is a toxic heavy metal released into the environment from both natural and anthropogenic sources. The organic form of mercury is a potent neurotoxin that is especially dangerous to developing nervous systems. Results of recent studies have caused the Food and Drug Administration (FDA) and the Environmental Protection Agency...
Resource Type:: Masters Thesis

Effect of high pressure processing on the survival of Vibrio parahaemolyticus strains in pure culture and Pacific oysters

Creator:: Calik, Hakan
Abstract:: Different strains of Vibrio parahaemolyticus (Vp) in broth cultures and Vp-inoculated live Pacific oysters (Crassostrea gigas) were subjected to high pressure processing (HPP) at 241, 276, 310, and 345 MPa. Results showed Vp numbers were reduced by HPP in both pure culture and whole oysters. Vp inactivation was dependent on...
Resource Type:: Masters Thesis

Solubility and structure of fish myofibrillar proteins as affected by processing parameters

Creator:: Lin, Tein Min, 1964-
Abstract:: The results of SDS-PAGE and densitometry indicated that a significant amount of myofibrillar proteins was lost during surimi processing. Microfiltration (MF) was utilized to recover insoluble particulate. The MF-recovered proteins showed highly functional properties in gel hardness, cohesiveness, color, and water retention ability. The soluble proteins concentrated by ultrafiltration (UF)...
Resource Type:: Dissertation

ScholarsArchive@OSU

New development of beta-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties, New development of β-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties

Methods of extraction and characterization of polyphenol oxidase from d'Anjou pears (Pyrus Communis L.)

Development of anthocyanins and proanthocyanidins in Pinot noir grapes and their extraction into wine

Interactions between Oenococcus oeni and Brettanomyces bruxellensis during winemaking and consequences for wine quality

Extraction and partial characterization of strawberry polyphenol oxidase

Free Monoterpene Isomer Profiles in White Wine : Effect of Grape Variety, Region and Style and Impact on Odor Perception

Factors Affecting the Efficacy of Depuration for Decreasing Vibrio parahaemolyticus Contamination in Pacific Oysters (Crassostrea gigas)

Mercury levels in albacore tuna (Thunnus alalunga) and the effects of canning

Effect of high pressure processing on the survival of Vibrio parahaemolyticus strains in pure culture and Pacific oysters

Solubility and structure of fish myofibrillar proteins as affected by processing parameters

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