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Creator:: Miaw, Mei-chen
Abstract:: Previously, it has not been possible to obtain a concentrated ripe Bartlett pear essence. From studies of Bartlett pear aroma characteristics, it was found that methyl and ethyl decadienoates are the components contributing to the characteristic ripe Bartlett pear aroma. It was also found that only perfume-like aroma products, lacking...
Resource Type:: Masters Thesis
Full Text:: ON THE RECOVERY OF CONCENTRATE PEAR ESSENCE FROM RIPE BARTLETT PEARS Abstract approved

Creator:: Akhavan, Iradj
Abstract:: Two methods of separating sugars and acids of Bartlett pears were compared to decide upon a working method for later studies involving identification and quantitation of sugars and acids during ripening of pears and in the production and storage of pear concentrate. The first method involved precipitation of acids with...
Resource Type:: Dissertation
Full Text:: OF SUGARS AND ACIDS DURING RIPENING OF PEARS AND IN THE PRODUCTION AND STORAGE OF PEAR

Creator:: Chang, Yih Hermon
Resource Type:: Masters Thesis
Full Text:: ANALYSIS OF ACID PRECIPITATED COLLOID OF RIPE BARTLETT PEAR JUICE Abstract approved: D.V. Beavers Nu

Creator:: Hodgson, Jeanne
Abstract:: Ultrafiltration of d'Anjou pear juice in the batch mode with a Romicon HFXS MXII pilot-scale ultrafilter produced a "sparkling clear", light-colored permeate which was sterile, essentially free of pectin, and lower in phenolics than the feed juice. Retention characteristics of PM-50, PM-30 and PM-10 hollow fiber membranes were tested at...
Resource Type:: Masters Thesis
Full Text:: : ULTRAFILTRATION OF PEAR JUICE: CHEMICAL AND PHYSICAL ANALYSIS r ?" Abstract approved: .„_ . ' Dr

Creator:: Wissemann, Kimberly Warner
Abstract:: Polyphenol oxidase (PPO) from d'Anjou pears was purified and some molecular properties were studied. The extraction of PPO was accomplished in the presence of the phenolic binder AG 2X-8 and Triton X-100. Chlorophyll pigment was removed by chromatography resulting in a clear, colorless enzyme extract. Three fractions of pear PPO...
Resource Type:: Dissertation
Full Text:: : Purification and Properties of d'Anjou Pear (Pyrus communis, L.) Polyphenol Oxidase Abstract approved

Creator:: Saeed, Mohammed
Abstract:: Commercial utilization of pollinizing varieties of pears is important both for pear growers and processors in Oregon. A study was made to determine the suitability of Comice, Packam's Triumph and Anjou, the three pollinizing varieties of pears, for dehydration, as compared to the Bartlett variety which is commercially used for...
Resource Type:: Masters Thesis
Full Text:: (MajprProfessor) Commercial utilization of pollinizing varieties of pears is im- portant both for pear growers

Creator:: Cornwell, Chris
Resource Type:: Masters Thesis
Full Text:: MASTER OF SCIENCE in FOOD SCIENCE presented on August 30, 1979 Title: CAUSES OF BROWNING IN PEAR

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