Search Results

You are looking at 1 - 10 of 98 items for :

  • Refine by Access: All x
Clear All
Free access

Chunyu Zhang, Xuesen Chen, Hongwei Song, Yinghai Liang, Chenhui Zhao, and Honglian Li

volatile compounds released by M. baccata and M. prunifolia fruit. We identified 58 and 54 volatile compounds, including alcohols, esters, aldehydes, terpenes, hydrocarbons, ethers, heterocycles, carboxylic acids, and ketones, in 10 M. baccata

Free access

James J. Polashock, Robert A. Saftner, and Matthew Kramer

are primarily aldehydes and terpenes ( Baloga et al., 1995 ; Overton and Manura, 1999 ). Aldehydes, organic compounds containing a terminal carbonyl (-CHO) group, are often derived from lipid peroxidation ( Latrasse, 1991 ). Terpenes, primarily plant

Open access

Dave Hawley, Thomas Graham, Michael Stasiak, and Mike Dixon

bud has a relatively high density of glandular trichomes rich in cannabinoids and terpenes that are of medicinal and recreational interest ( Happyana et al., 2013 ). There are relatively few peer-reviewed studies on optimizing environmental parameters

Free access

Ying Jia, Dianren Xia, and E.S. Louzada

A cDNA coding for a putative terpene synthase (Grtps) was isolated from `Rio Red' grapefruit (Citrus paradisi Macf.) mature fruit by differential display RT-PCR and the corresponding full-length cDNA and genomic clone were subsequently obtained. The isolated cDNA clone was 1644 bp in length encoding a protein of 548 amino acids with a predicted molecular mass of 64 kDa and of pI 5.38. The genomic clone was 3203 bp in length with 6 introns and 7 exons. This Grtps appears to be a sesquiterpene synthase based on molecular weight, genomic organization, and similarity with the other terpene synthases. Both RT-PCR and Northern blot expression analysis indicated that Grtps is not expressed in immature fruits, roots, or leaves, but only in mature fruits. Southern blot analysis of genomic DNA demonstrated that Grtps is one of the members in the family of terpene synthases.

Free access

Andrew G. Reynolds, Douglas A. Wardle, and Marjorie Dever

Vitis vinifera L. cultivars Müller-Thurgau, Muscat Ottonel, Gewürztraminer, and Kerner were studied for 1 year to document changes in fruit terpene levels from berry stage to free-run and press-juice stages. Substantial amounts of free volatile terpenes (FVTs) and potentially volatile terpenes (PVTs) were lost between berry and juice stages. PVTs were higher in press juices of `Gewürztraminer' and `Muscat Ottonel' than in free-run juices. In another experiment, juices from `Miiller-Thurgau', `Muscat Ottonel', `Kerner', `Optima', `Pearl of Csaba', and `Siegerrebe', harvested 10 to 20 days after a designated initial harvest date, contained higher FVTs and PVTs than initially. A third experiment with `Kerner', `Müller-Thurgau', `Optima', and `Siegerrebe' found highest FVTs and PVTs in juices from grapes subjected to skin contact compared with grapes crushed and immediately pressed. Sensory evaluation showed aroma differences between wines from free-run and press juices of `Miiller-Thurgau' and `Muscat Ottonel', aroma and flavor differences due to harvest date for all cultivars except `Pearl of Csaba', and aroma and flavor differences due to skin contact for `Siegerrebe'.

Open access

Juan J. Polari, Louise Ferguson, and Selina C. Wang

aroma. Volatile terpenes are the key components for their aroma, being the major compounds in raw kernels limonene, α-pinene and β-myrcene ( Kendirci and Onoǧur, 2011 ; Rodríguez-Bencomo et al., 2015 ). In California, pistachios are the third most

Free access

Jian-rong Feng, Wan-peng Xi, Wen-hui Li, Hai-nan Liu, Xiao-fang Liu, and Xiao-yan Lu

high level of terpenes ( Fig. 1B ). ‘Danxing’, ‘Sumaiti’, and ‘Kumaiti’ were clustered into group C ( Fig. 1A ) and were characterized by high levels of aldehydes and alcohols ( Fig. 1B ). These changes are consistent with the GC-MS results. Fig. 1

Free access

Dong Sik Yang, Svoboda V. Pennisi, Ki-Cheol Son, and Stanley J. Kays

hydrocarbons [e.g., trichloroethylene (TCE), methylene chloride], and terpenes (e.g., α -pinene, d -limonene) ( Jones, 1999 ; Suh et al., 2000 ; Wolkoff and Nielsen, 2001 ; Won et al., 2005 ; Zabiegała, 2006 ). Benzene and toluene, octane, TCE, and α

Free access

Jinhe Bai, Elizabeth Baldwin, Jack Hearn, Randy Driggers, and Ed Stover

standards for both harvests ( Elston et al., 2005 ). Other important terpene compounds included two terpene alcohols, linalool, and α-terpineol and two terpene aldehydes, citral and sinensal ( Tables 1 and 2 ). Both linalool and α-terpineol were detected

Free access

Jawwad A. Qureshi, Barry C. Kostyk, and Philip A. Stansly

-spray applications of multiple MoA insecticides tested over the most effective single MoA active ingredients sprayed alone for control of D. citri or P. citrella . Tank mixing with synthetic plant terpenes (Requiem 25 EC, Unknown MoA) did not improve the