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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

Assessing the impact of temperature on grape phenolic metabolism

Creator:: Cohen, Seth D.
Abstract:: Many climatic factors influence grape berry composition including nutrient status, water availability, biotic stress, sun exposure and temperature. Previous research examined the effects of many factors listed above and much progress has been made. It is often difficult, however, to separate effects that typically confound each other, such as sun...
Resource Type:: Masters Thesis
Full Text:: Exobasidium vexans tended to be higher in (-)-epicatechin (EC) and lower in epigallocatechin gallate (EGCG

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

Creator:: Benjamin, Namrod David
Resource Type:: Dissertation
Full Text:: . This browning has been attributed to the action of an enzyme called polyphenol oxidase (EC 1. 10. 3

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

Cellulase system of Trichoderma reesei QM9414 : a study of its apparent sustrate inhibition

Creator:: Huang, Xiaolin
Resource Type:: Dissertation
Full Text:: glucanohydrolase (endoglucanase or EG; EC 3.2.1.4), (2) l,4-(3-D-glucan cellobiohydrolase (exoglucanase or

Salt and polyelectrolyte affect on food colloid function : polygalacturonic acid and egg albumen case studies

Creator:: Chen, Chi-Shen
Abstract:: The primary purpose of this study was to try to (1) provide information on the chemical nature, including turbidity formation, of polygalacturonic acid in different concentrations of NaCl solution. (2) use turbidity formation characteristics to develop an assay for determining the activities polygalacturonic acid depolymerases by using a polyelectrolyte. (3)...
Resource Type:: Dissertation
Full Text:: pectinase from Rhizopus. J. Mol. Catalysis 92, 333-46. Walstra, P. (1996). “Dispersed Systems: Basic

Kinetic properties and characterization of purified proteases from Pacific whiting (Merluccius productus)

Creator:: Wu, JuWen
Abstract:: Kinetic properties of the two proteases, causing textural degradation of Pacific whiting (Merluccius productus) during heating, were compared and characterized with the synthetic substrate, Z-Phe-Arg-NMec. Pacific whiting P-I and P-II showed the highest specificity on Z-Phe-Arg-NMec, specific substrate for cathepsin L. The K [subscript m] of preactivated P-I and P-II...
Resource Type:: Masters Thesis
Full Text:: cathepsins B (EC 3.4.22.1), L (EC 3.4.22.15) and H (EC 3.4.22.16) (cysteine proteases) (Barrett and

Preparation and modification of cellooligosaccharides

Creator:: Akpinar, Ozlem
Abstract:: Cellooligosaccharides are the reaction intermediates produced during the hydrolysis of cellulose to glucose. Hence, they have the same chemical structure as cellulose, just shorter chain lengths. Cellooligosaccharides up to DP eight are soluble in water. The soluble cellooligosaccharides can be used "as is" in the food industry as non-digestible oligosaccharides...
Resource Type:: Dissertation
Full Text:: microbial cellulases. In nature, cellulolytic enzyme systems consist of endocellulases (EC 3.2.1.4

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:: when used alone. Hydrolases common to these enzyme systems include endoglucanases (EC 3.2.1.4

Chemical analysis of acid precipitated colloid of ripe Bartlett pear juice

Creator:: Chang, Yih Hermon
Resource Type:: Masters Thesis
Full Text:: methyl ester- ase (EC 3.1.1.11) is almost completely specific in hydrolyzing the methylesters of

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

Assessing the impact of temperature on grape phenolic metabolism

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

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

Cellulase system of Trichoderma reesei QM9414 : a study of its apparent sustrate inhibition

Salt and polyelectrolyte affect on food colloid function : polygalacturonic acid and egg albumen case studies

Kinetic properties and characterization of purified proteases from Pacific whiting (Merluccius productus)

Preparation and modification of cellooligosaccharides

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

Chemical analysis of acid precipitated colloid of ripe Bartlett pear juice

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