Monovarietal dry-hopped beers were produced with the dual-purpose hop cultivars Amarillo, Hallertau Blanc, and Mosaic. The grapefruit-like 3-sulfanyl-4-methylpentan-1-ol was found in all three beers at concentrations much higher than expected on the basis of the free thiol content in hop. Even cysteinylated precursors proved unable to explain our results. As observed in wine, the occurrence of ...

Sexually mature, mated female Mexican fruit ßies, Anastrepha ludens (Loew), from a laboratory culture, whether starved or not, were attracted to grapefruit in a wind tunnel. Females starved for 24 h were more strongly attracted than fed females but those starved for 48 h were equivalent to fed females in responsiveness. There were no signiÞcant differences in propensity to attempt oviposition o...

Young and unripe oranges and grapefruits stored at 15 degrees or 20 degrees evidenced shortly after harvest a marked increase in respiratory rate, and then a well-defined maximum which was followed by a decrease.Ethylene production by oranges (measured by the manometric method) was observed, with curves parallel to the respiratory curves.The respiratory upsurge was accompanied by color changes ...

BACKGROUND Citrus has an extended juvenile phase and trees can take 2-20 years to transition to the adult reproductive phase and produce fruit. For citrus variety development this substantially prolongs the time before adult traits, such as fruit yield and quality, can be evaluated. Methods to transform tissue from mature citrus trees would shorten the evaluation period via the direct productio...

Repetitive DNA sequences constitute a significant component of most eukaryotic genomes, and the isolation and characterization of such sequences provide an insight into the organization of the genome of interest. Here, we report the isolation and molecular characterization of a novel repetitive DNA sequence from the genome of Citrus limon. Digestion of C. limon DNA with MboI produced a prominen...

An HPLC analysis was performed on the concentrations of flavonoids in 42 species and cultivars of the Citrus genus and those of two Fortunella and one Poncirus species according to the classification system established by Tanaka. The composition of 8 flavanones and 9 flavone/ols for these species was determined in the albedo, flavedo, segment epidermis and juice vesicle tissues, and those in th...

Abstract The significance of grapefruit is laying in its unique medicinal values and health related compounds. This article discusses the influence seasonal variations storage periods on synthesis accumulation new polyphenolic compounds, terpenes, flavonoids sugars profiling ( Citrus paradisi ) cv. shamber juice were evaluated under advance techniques. individual sugar (total sugar, fructose, g...