- Five genotypes from California (Ventana, Caniarosa, San Miguel, 13G97, and
Venice) and Oregon (Totem, Puget Reliance, Puget Summer, Hood and Independence)
were evaluated for quality. The volatile compounds were analyzed using head space solid
phase micro extraction-gas chromatography-flame ionization detection (GGFID) and gas
chromatography-mass spectrometry (GC-MS). Odor activity values of the compounds
were calculated to understand the contribution of the individual compounds to the
overall aroma. Ethyl butanoate, furaneol, ethyl hexanoate, ethyl acetate, ethyl isovalerate,
hexyl acetate and gamma dodecalactone have the highest odor activity values. The
chemical results were correlated with the sensory data obtained from a trained panel of 10
members. Correlation was achieved for the floral, pineapple, banana, peach and caramel
notes. The green notes did not correlate with the concentration and odor activity values
of the corresponding compounds. This variation could be due to the very high odor
activity of other compounds resulting in the masking of the green notes. The sugar, organic acid and ascorbic acid composition was investigated using
F]PLC Anthocyanin content was determined by pH differential method. The color
properties were studied by measuring tn-stimulus measurements. The average fructose,
glucose, sucrose and the total sugar content in the ten cultivars were 2.24, 1.96, 0.92 and
5.13 g/100 g respectively. Total acid content ranged from 0.93 g/100 g to 2.01 g/100 g.
Puget Summer had the highest total sugars and Independence had the highest acids and
ascorbic acid content. The anthocyanin content varied from 7.1 mg/100 g fruit to 30.52
mg/ba g fruit. The sensory evaluation of the genotypes in terms of sweetness and
sourness could be partially explained by sugar/acid ratio. A consumer preference test
showed that 'Totem' and 'Puget Reliance' were preferred over 'Camarosa' and 'Ventana'
for their aroma.
- File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
- description.provenance : Made available in DSpace on 2011-05-03T15:26:38Z (GMT). No. of bitstreams: 1JettiRajeshR2006.pdf: 1157341 bytes, checksum: fd93bf0254e4f282d1fba81d3d4cce5d (MD5) Previous issue date: 2005-06-17
- description.provenance : Submitted by Erin Clark (firstname.lastname@example.org) on 2011-05-02T17:16:14ZNo. of bitstreams: 1JettiRajeshR2006.pdf: 1157341 bytes, checksum: fd93bf0254e4f282d1fba81d3d4cce5d (MD5)
- description.provenance : Approved for entry into archive by Patricia Black(email@example.com) on 2011-05-03T14:50:18Z (GMT) No. of bitstreams: 1JettiRajeshR2006.pdf: 1157341 bytes, checksum: fd93bf0254e4f282d1fba81d3d4cce5d (MD5)
- description.provenance : Approved for entry into archive by Patricia Black(firstname.lastname@example.org) on 2011-05-03T15:26:38Z (GMT) No. of bitstreams: 1JettiRajeshR2006.pdf: 1157341 bytes, checksum: fd93bf0254e4f282d1fba81d3d4cce5d (MD5)