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Filtering by: Subject Fruit juices -- Analysis Remove constraint Subject: Fruit juices -- Analysis Decade 2000-2009 Remove constraint Decade: 2000-2009

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  • 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
    Full Text:
    acid, g/lOOmL juice; b data were calculated as citric acid, g/lOOg fruit;c data were calculated as

  • Pineapple juice : phenolic composition and enzymatic browning inhibition

    Creator:
    Wen, Ling
    Abstract:
    The phenolic profile of pineapple juice was analyzed by reverse-phase HPLC/Diode Array Detector, and 9 major peaks accounting for 70% of total peak area were characterized. None of these peaks are represented by the pineapple phenolics reported to be present by previous workers. Most of the major peaks are not...
    Resource Type:
    Dissertation
    Full Text:
    composition of pineapple fruit (Macheix et al, 1990), juice (Fernandez de Simon et al., 1992) and shell fiber

  • Aroma investigation of ‘Marion’ and thornless blackberries in Pacific Northwest of America

    Creator:
    Du, Xiaofen
    Abstract:
    The objectives of this study are to 1) qualitatively and quantitatively measure the odor-active compounds in ‘Marion’ blackberry; 2) compare the aroma profiles of advanced selections and new cultivars of thornless blackberry cultivars with ‘Marion’; 3) study the development of furaneol in ‘Marion’ during ripening and; 4) investigate the distribution...
    Resource Type:
    Dissertation
    Full Text:
    -MS with PVPP decoloration of juice. Furaneol glucosides were isolated with XAD-2 sorbent