Results 141 to 150 of about 22,134 (189)

Apple Volatiles Synergize the Response of Codling Moth to Pear Ester

Journal of Chemical Ecology, 2013
Codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae), is a major cosmopolitan pest of apple and other pome fruits. Ethyl (E,Z)-2,4-decadienoate (pear ester) has been identified as a host-derived kairomone for female and male codling moths.
Ashraf M, El-Sayed, Lyn, Cole, John, Revell, Lee-Anne, Manning, Andrew, Twidle, Alan L, Knight, Vincent G M, Bus, David M, Suckling   +7 more
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Behavior of Codling Moth (Lepidoptera: Tortricidae) Neonate Larvae on Surfaces Treated With Microencapsulated Pear Ester

Environmental Entomology, 2012
Codling moth, Cydia pomonella (L.), larvae cause severe internal feeding damage to apples, pears, and walnuts worldwide. Research has demonstrated that codling moth neonate first instar larvae are attracted to a pear-derived kairomone, ethyl (2E,4Z)-2,4-decadienoate, the pear ester (PE).
Douglas M, Light, John J, Beck
openaire   +4 more sources

Jasmonate activated PuCBF5 to increasing ester accumulation in cold-stored ‘Nanguo’ pear fruit

Plant Physiology and Biochemistry
'Nanguo' pear is a distinctive fruit from Liaoning Province and is highly appreciated by consumers. However, its aroma quality has been observed to diminish after cold storage. Methyl jasmonate (MeJA) is a plant hormone that can promote the esters accumulation in fruits while the exact molecular mechanisms still unclear.
Zhuoran Zhang, Liyong Qi, Nannan Zang, Yueming Yang, Baofeng Wang, Xiangzhuo Liu, Zepeng Yin, Aide Wang   +7 more
openaire   +4 more sources

The biological efficacy of pear ester on the activity of Granulosis virus for codling moth

Journal of Pest Science, 2007
Ethyl (E,Z)-2,4-decadienoate (pear ester) is an adult and larval kairomonal attractant for Cydia pomonella (L.) (Lepidoptera: Tortricidae). The possibility of using a microencapsulated formulation of pear ester (DA-MEC, a.i. 5%, Trece Inc.) to interfere with the host location behaviour was evaluated.
Schmidt, Silvia, Tomasi, Cristina, Pasqualini, E., Ioriatti, Claudio   +3 more
openaire   +5 more sources

Transcriptome analyses provide new possible mechanisms of aroma ester weakening of ‘Nanguo’ pear after cold storage

Scientia Horticulturae, 2018
Abstract ‘Nanguo’ pear are popular for their unique aroma ester. However, we found that the fragrance faded undergoing long term low temperature (LT) storage, and the aroma-weakening mechanism has not been well understood. To this end, the transcriptome of the fruit on 0 d and optimum tasting period (OTP) during shelf life at room temperature (RT ...
Fei Shi, Xin Zhou, Qian Zhou, Zhuo Tan, Miao-miao Yao, Bao-dong Wei, Shu-juan Ji   +6 more
openaire   +3 more sources

Transcription factors PuNAC37/PuWRKY74 and E3 ubiquitin ligase PuRDUF2 inhibit volatile ester synthesis in ‘Nanguo’ pear

Plant Physiology
Abstract As major contributors to flavor in many fruit species, volatile esters are useful for investigating the regulation of the biosynthesis pathways of volatile aroma compounds in plants. Ethylene promotes the biosynthesis of volatile esters during fruit storage while accelerating fruit ripening; thus, the ethylene perception ...
Nannan Zang, Xiaojing Li, Zhuoran Zhang, Weiting Liu, Liyong Qi, Yueming Yang, Qitian Sun, Zepeng Yin, Aide Wang   +8 more
openaire   +4 more sources

Stereoselective Synthesis of Pear Ester

Chemistry of Natural Compounds, 2017
A simple two-step synthesis of ethyl-(2E,4Z)-deca-2,4-dienoate based on Fe-catalyzed cross-coupling of ethyl-(2E,4Z)-5-chloropenta-2,4-dienoate, which was obtained via one-pot oxidation and olefination of readily available (2Z)-3-chloroprop-2-en-1-ol by n-pentylmagnesiumbromide, was developed.
R. N. Shakhmaev, A. Sh. Sunagatullina, D. A. Akimova, V. V. Zorin   +3 more
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Synthesis of ‘Pear Ester’. A novel synthesis of 2,4‐diolefinic aldehydes and esters

Helvetica Chimica Acta, 1973
AbstractVinylogous epoxyaldehydes undergo stereospecific Wittig condensations in high yields. The resulting diolefinic epoxides are cleaved at the C(1)–C(2) single bond, when treated with periodic acid, to give the corresponding aldehydes. Direct transformation into the corresponding ethyl‐ester leads to an efficient synthesis of the ‘pear ester’.
Günther Ohloff, Manfred Pawlak
openaire   +1 more source

A Stereoselective Synthesis of Pear Ester Via Arsenic Ylide

Synthetic Communications, 1989
Abstract The paper describes a four-step synthesis of ethyl (2E, 4Z)-2, 4-decadienoate (pear ester) from propargyl alcohol with a 50% total yield. It also gives the synthesis of ethyl (2E, 4E)-2, 4-decadienoate. In both cases arsenic ylides were used to give the satisfactory results.
Li Zhengming, Wang Tiansheng, Zhang Diankun, Gao Zhengheng   +3 more
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Volatile Esters of Bartlett Pear. III. ^a

Journal of Food Science, 1964
SUMMARY Bartlett pear essence was separated by gas chromatography without losing its desirable aroma characteristics. This was done by room‐temperature on‐column injections, followed by a programmed temperature increase of the chromatographic column. Evidence is presented indicating that the methyl (or other short‐
W. G. JENNINGS, M. R. SEVENANTS
openaire   +1 more source