Cherry phytochemicals Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/jd472z73d

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • 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). The effect of frozen storage, canning, and brining on those properties was measured. Experiments were conducted on three sweet cherry cultivars; Bing, Rainier, Royal Ann and one sour cherry cultivar; Montmorency. Cherries were separated into skins, flesh, pits, and pitted cherries for subsequent analyses. Bing had the highest anthocyanin pigments (60.6 mg/lOOg fw) while Montmorency had both the highest total phenolic content (5.6 mg GAE/g fw) and the highest antioxidant activities (ORAC 51.02 μmoles Trolox equivalent (TE) /g fw, FRAP 47.96 μmoles TE/g fw). Hydroxycinnamates predominated in sweet cherries (70-80%) while flavanols were the major class of polyphenolics in sour cherries (70%). The major anthocyanins in sweet and sour cherries were cyanidin-3-rutinoside and cyanidin-3- glucosylrutinoside, respectively. Skins contained the highest amount of anthocyanins, polyphenolics, and antioxidant activities. Anthocyanins and flavonol glycosides predominated in cherry skins. Bing cherries were different from the others in that it had substantial anthocyanins in flesh and pits. The proportion of flavanols increased from skins to pits. Pitted Bing cherries were frozen and stored at -23 and -70°C for 3 and 6 months. Pitted Bing cherries were also canned in light syrup and stored at 2 and 22°C for 5 months. Both Bing and Royal Ann cherries were brined in bisulfite for one year. In all processing experiments, polyphenolics were more stable than anthocyanins. Degradation of hydroxycinnamates occurred during frozen storage and canning while flavonol glycosides were relatively stable. With both canning and brining, anthocyanins and polyphenolics leached into syrup and brine. With brining, hydroxycinnamates and flavonol glycosides disappeared, and unidentified compounds with UV-Visible spectra similar to flavanols were formed. Unidentified compounds possessed antioxidant activity. Cherry skins are high in anthocyanins, polyphenolics and antioxidant properties. Cherry pits and spent brine solution may be a potential source for natural colorants, nutraceuticals, and natural antioxidants.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 24-bit Color) using Scamax Scan+ V.1.0.32.10766 on a Scanmax 412CD by InoTec in PDF format. LuraDocument PDF Compressor V.5.8.71.50 used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2012-01-26T19:40:19Z (GMT). No. of bitstreams: 1 CHAOVANALIKITARUSA2003.pdf: 1890090 bytes, checksum: 1fa5858d6c3565f0a9b3774f05231776 (MD5) Previous issue date: 2003-06-03
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-01-26T19:40:19Z (GMT) No. of bitstreams: 1 CHAOVANALIKITARUSA2003.pdf: 1890090 bytes, checksum: 1fa5858d6c3565f0a9b3774f05231776 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-01-03T21:39:25Z (GMT) No. of bitstreams: 1 CHAOVANALIKITARUSA2003.pdf: 1890090 bytes, checksum: 1fa5858d6c3565f0a9b3774f05231776 (MD5)
  • description.provenance : Submitted by Erin Clark (ecscannerosu@gmail.com) on 2011-12-28T21:33:19Z No. of bitstreams: 1 CHAOVANALIKITARUSA2003.pdf: 1890090 bytes, checksum: 1fa5858d6c3565f0a9b3774f05231776 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items