Index Catalog // ScholarsArchive@OSU

Effects of refrigeration storage and processing technologies on the bioactive compounds and antioxidant capacities of blackberries ('Marion' and 'Evergreen')

Creator:: Wu, Ruyi
Abstract:: The objective of this project was to investigate the effects of refrigeration storage and processing technologies on the quality and nutraceutical benefit of blackberries. 'Marion' and 'Evergreen', the two major blackberry varieties in Oregon, were evaluated in this study. For refrigeration storage, fresh fruit were packed in clam-shell containers right...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Ruyi Wu for the degree of Master of Science in Food Science and Technology

Effect of organic production system and harvest date on the quality of blackberry fruit for fresh and processed markets

Creator:: Liu, Mingyang
Abstract:: Blackberry (Rubus sp.) fruit are a good source of phenolic compounds and anthocyanins, and are consumed in fresh and processed forms. Though organic products become more popular, limited information is available about how different organic production methods affect the post-harvest quality of blackberry fruit. The objective of this project was...
Resource Type:: Masters Thesis
Full Text:: as the least destructive processing method for phenolic compounds of blackberry fruit (Wu et al

Antioxidant Effects of Blackberry Pomace on the Health of Transition Dairy Cows

Creator:: Estenson, Kaelyn A.
Abstract:: Blackberry pomace (BBP), a byproduct from juice processing, is often disposed of in landfills. We propose BBP as an antioxidant-rich feed supplement for transition dairy cows. To explore the effects of BBP on antioxidant status, 24 multiparous dairy cows (5 Holstein and 19 Jersey) were assigned randomly to one of...
Resource Type:: Honors College Thesis
Full Text:: a type of flavonoid that is water soluble and metabolized from phenylalanine (Glover and Martin

Isolation of a natural antioxidant from shrimp waste

Creator:: Li, Shiao Jing
Abstract:: Shrimp waste samples were extracted with a variety of organic solvents. Each fraction was measured for antioxidant activity by determining the rate of oxidation of β-carotene-linoleic acid in an emulsion system. An ethanol extract exhibited the highest antioxidant activity. Purification of the most active fraction was accomplished by thin layer...
Resource Type:: Dissertation
Full Text:: , and isorosmanol etc. were determined (Inatani et al., 1982; Wu et al., 1982; Nakatani and Inatani

Overexpression of antioxidant genes in transgenic tomato tolerant against multiple stresses

Creator:: Wang, Yueju
Abstract:: The effect of increased manganese superoxide dismutase (Mn-SOD) and cytosolic ascorbate peroxidase (cAPX) on various abiotic stresses was studied using transgenic tomato (Lycopersicon esculentum) plants. Transformants were selected in vitro based on kanamycin resistance, confirmed by PCR and northern blot analyses. Northern blots showed an enhanced gene expression of Mn-SOD...
Resource Type:: Dissertation
Full Text:: , 1993); maize (Zhu and Scandalios, 11 1993); rice (Kaminaka et al., 1999); wheat (Wu et al., 1999

Development of antioxidant dietary fibers from wine grape pomace and their applications as functional food ingredients

Creator:: Tseng, Angela Y.
Abstract:: Wine grape pomace (WGP), the byproduct from winemaking, is a good source of polyphenols and dietary fibers, and may be utilized as antioxidant dietary fibers (ADF) for food applications. The objectives of this thesis research were to first determine the phenolic compounds, antioxidant and antimicrobial activities in red WGP under...
Resource Type:: Masters Thesis

Influence of cultivar and maturity on blackberry polyphenolics and investigation of sediment formation in blackberry juice

Creator:: Siriwoharn, Thanyaporn
Abstract:: The influence of cultivar and maturity on polyphenolic composition and antioxidant activity was investigated by UV-Visible spectrophotometry and analytical high performance liquid chromatography (HPLC) in commercially important blackberry cultivars and selections. The anthocyanin pigments changed tremendously with ripening. Total anthocyanins increased from 74.7-317 mg/100g fw from underripe to over ripe...
Resource Type:: Dissertation

Cherry phytochemicals

Creator:: Chaovanalikit, Arusa, 1974-
Abstract:: The distribution of anthocyanin pigments and polyphenolics of sweet (Prunus avium) and sour cherries (Prunus cerasus) were determined by Ultraviolet- Visible (UV-Visible) spectrophotometry and High Performance Liquid Chromatography with photodiode array detector (HPLC-DAD). Their antioxidant properties were determined by Oxygen Radical Absorbance Capacity (ORAC) and Ferric Reducing Antioxidant Power (FRAP)....
Resource Type:: Dissertation

Breeding tomatoes for improved antioxidant activity

Creator:: Mes, Peter Jack, 1976-
Abstract:: Purple tomatoes (Lycopersicon esculemtum) were bred by incorporating genes that result in anthocyanin production in the skin of fruits. These genes originally came from related wild species as no naturally occurring genes encoding fruit anthocyanin expression are known within the cultivated species. By combining Aft or Abg with atv or...
Resource Type:: Dissertation

Model systems for structural investigations into peroxiredoxin catalysis, conformation change, and inactivation

Creator:: Perkins, Arden
Abstract:: Peroxiredoxin (Prx) enzymes catalyze the reduction of hydrogen peroxide, peroxynitrous acid, and organic peroxides, and are extremely efficient peroxidases, with k[subscript cat]/K[subscript M] on the order of 10⁷ - 10⁸ M⁻¹ s⁻¹. Besides their role in oxidative stress defense, evidence has accumulated that some eukaryotes, including humans, use Prxs as...
Resource Type:: Dissertation

ScholarsArchive@OSU

Effects of refrigeration storage and processing technologies on the bioactive compounds and antioxidant capacities of blackberries ('Marion' and 'Evergreen')

Effect of organic production system and harvest date on the quality of blackberry fruit for fresh and processed markets

Antioxidant Effects of Blackberry Pomace on the Health of Transition Dairy Cows

Isolation of a natural antioxidant from shrimp waste

Overexpression of antioxidant genes in transgenic tomato tolerant against multiple stresses

Development of antioxidant dietary fibers from wine grape pomace and their applications as functional food ingredients

Influence of cultivar and maturity on blackberry polyphenolics and investigation of sediment formation in blackberry juice

Cherry phytochemicals

Breeding tomatoes for improved antioxidant activity

Model systems for structural investigations into peroxiredoxin catalysis, conformation change, and inactivation

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