Index Catalog // ScholarsArchive@OSU

Understanding the principles and procedures to retain green and red pigments in thermally processed peels-on pears (Pyrus communis L.)

Creator:: Ngo, Thao Xuan
Abstract:: Thermal stabilization of chlorophyll and anthocyanin on pear peels during thermal process was investigated in this study. The green color of peels-on thermally processed (canned) pears was successfully retained by complexation of magnesium-free chlorophyll with zinc ions, and the red pigments were stabilized through anthocyanin-stannous complexation and polymerization of pear...
Resource Type:: Dissertation
Full Text:: Thermal stabilization of chlorophyll and anthocyanin on pear peels during thermal process was

Novel methods for crop load management of pear cultivars in the Pacific Northwest

Creator:: Arrington, Matthew A.
Abstract:: Novel approaches to crop load management of pear orchards in the Pacific Northwest (PNW) are necessary, but will need to vary according to the unique vegetative and reproductive growth habits of the cultivar. 'D'Anjou' is vigorous and non-precocious; thus, strategies to limit vigor and induce early fruiting are required. In...
Resource Type:: Masters Thesis
Full Text:: Alternative Methods of Crop Load Management in Pear

Factors affecting the incidence and severity of Phytophthora syringae cankers in pear (Pyrus communis) trees

Creator:: Laywisadkul, Srisangwan
Abstract:: Container grown pear trees were used to determine the effects of the following factors on the susceptibility to Phytophthora syringae: 1) tree nitrogen (N) status and foliar sprays of urea and copper-EDTA (CuEDTA); 2) dormancy and environmental conditions; 3) wound and wound age; and 4) chemical and biological control measures....
Resource Type:: Dissertation
Full Text:: Severity of Phytophthora syringae Cankers in Pear (Pyrus communis) Trees Abstract approved

Analysis of semi-volatile organic compounds in high elevation lake sediments

Creator:: Wang, Yunzhu
Abstract:: The transport and deposition of airborne contaminants, including semivolatile organic compounds (SOCs), to high elevation ecosystems is recognized as a potential threat to these ecosystems. The objectives of this research were to develop an analytical method to measure a wide range of SOCs in high elevation lake sediment and to...
Resource Type:: Masters Thesis
Full Text:: analytical method, we measured SOCs in a sediment core collected from Pear Lake, Sequoia National Park, CA

A Demand System Analysis of Marketing Strategies for Apples and Pears in the Conventional Supermarket Environment

Creator:: McFetridge, Marc V.
Abstract:: This research examines how marketing strategies of produce managers affect consumer expenditures for fresh apples and pears. The objective of this study is to determine how display size, point-of-purchase material, product origin, product information and display placement impact consumer expenditures for fresh apples and pears. These variables were incorporated into...
Resource Type:: Masters Thesis

Studies on the etiology and epidemiology of bull's eye rot of pears

Creator:: Henriquez, Jose Luis, 1961-
Abstract:: The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...
Resource Type:: Dissertation
Full Text:: determine periods of greatest susceptibility of pear wood to canker formation by the fungal pathogens

Nondestructive evaluation of in vitro-stored plants : a comparison of visual and image analysis systems

Creator:: Aynalem, Hailu M.
Abstract:: In-vitro plants in slow-growth storage must be routinely evaluated for repropagation and assessment of viability. It is often difficult to determine plant health by visual assessment due to variation in growth patterns and plant structure among genera. In order to evaluate cold-stored germplasm, laboratories need more effective approaches for viability...
Resource Type:: Masters Thesis
Full Text:: Pyrus (pear) and Humulus (hops) in- vitro stored germplasm were evaluated both by visual and digital

Investigation of Optimal Extraction Conditions and Microencapsulation Technique for Stabilizing Anthocyanins and Polyphenols from Fruit Materials

Creator:: Wang, Wenjie
Abstract:: The objectives of this research were to investigate the optimal conditions for anthocyanins extraction from different anthocyanin rich fruit and to develop microencapsulation formulation for improving stability of anthocyanin extracts. In the extraction optimization study, two extraction methods, "conventional solvent extraction (CE)" and "ultrasound-assisted extraction (UE)" for three different anthocyanin-rich...
Resource Type:: Masters Thesis
Full Text:: , blueberries, cherries and red pear peels, were investigated. For each extraction method, 3 extraction

Plant hormone-induced defense responses against Botrytis cinerea

Creator:: Akagi, Aya
Abstract:: Several plant hormones, including ethylene and jasmonates, are known to mediate responses against biotic and abiotic stress. The first and second objectives of this thesis were (i) to elucidate the role of ethylene in defense responses against Botrytis cinerea and specifically (ii) to determine the potential contribution of ethylene response...
Resource Type:: Dissertation
Full Text:: pear (Pyrus communis). However, effects of ethylene on B. cinerea infection of fruits are not well

ScholarsArchive@OSU

Understanding the principles and procedures to retain green and red pigments in thermally processed peels-on pears (Pyrus communis L.)

Novel methods for crop load management of pear cultivars in the Pacific Northwest

Factors affecting the incidence and severity of Phytophthora syringae cankers in pear (Pyrus communis) trees

Analysis of semi-volatile organic compounds in high elevation lake sediments

A Demand System Analysis of Marketing Strategies for Apples and Pears in the Conventional Supermarket Environment

Studies on the etiology and epidemiology of bull's eye rot of pears

Nondestructive evaluation of in vitro-stored plants : a comparison of visual and image analysis systems

Investigation of Optimal Extraction Conditions and Microencapsulation Technique for Stabilizing Anthocyanins and Polyphenols from Fruit Materials

Plant hormone-induced defense responses against Botrytis cinerea

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