摘要:

This study was performed to determine the variation in leaf epicuticular wax composition and yield between 17 species ofEucalyptuswith horticultural potential, and to identify a possible solvent for epicuticular wax using headspace volatile analysis. Variation in the amount and composition of leaf epicuticular wax among 17 species ofEucalyptusL'Héritier (Myrtaceae) with horticultural potential, was characterized by GC, TLC and GC/MS. Across species, wax yield ranged from 0.7 to 4.5 mg/cm2. The major wax constituents in all species exceptE. delegalensisR. Baker, were β-diketones (24.7–83.0%), followed by wax esters (6.4–26.5%), n-alkanes (3.5–26.5%), fatty acids (3–15.9%), n-alcohols (0.6–11.1%) and aldehydes (0–9.2%). InE. delegatensisthe major wax constituents were wax esters (46.6%), β-diketones (24.7%), n-alkanes (11.5%), fatty acids (7.5%), n-alcohols (5.2%) and aldehydes (4.3%). Volatile organic compounds emitted from developingEucalyptusleaves of six species were studied using solid phase microextraction (SPME), and were analyzed by GC and GC/MS. Leaf oils were extracted from four of the six species and the relative amounts of volatile compounds in the extract and headspace compared. The major volatile constituents were α-pinene (11.4–57.8%, headspace; 15.3–32.2%, oil extract) and 1,8-cineole (3.2–88.6%, headspace; 20.8–54.7%, oil extract). Other terpenoids present in the headspace in significant quantities were allo-aromadendrene, viridiflorene, α-thujene, α-phellandrene, γ-terpinene and limonene. In the oil extract, allo-aromadendrene, α-phellandrene, viridiflorene and limonene were present in significant quantities. Components of leaf oils are potential solvents involved in the transport of waxes from the epidermis to the cuticle, although this is not confirmed by the present study.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699550

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The leaf oil ofDennettia tripetala, Annonaceae, was analyzed by capillary GC and GC/MS. Forty eight compounds were indentified, accounting for 99.5% of the oil. The major constituents were 2-phenyl-1-nitroethane (53.7%), methyl eugenol (22.8%) and linalool (15.7%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699551

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The chemical composition of the volatile concentrates of the flowers ofWulffia baccataandZinnia eleganswere analyzed by GC/MS. The major components identified in the flowers ofW. baccatawere (E)-(β-ocimene (17.3%), limonene (136%), germacrene D (13.0%) and myrcene (11.8%). Germacrene D (12.4%) and p-cymene (9.1%) were the major components found in the flowers ofZ. elegans.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699552

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The composition of essential oils of threeSideritisspecies was investigated by GC and GC/MS. It was found that the oil ofS. syriacaL. contained a high percentage of myrcene (50.5%), while sesquiterpenes dominated in the oils ofS. scardicaGriseb andS. monianaL. The major components inS. scardicaoil were β-caryophyllene (18.8%) and nerolidol (12.1%), while germacrene D (41.1%) and bicyclogermacrene (10.9%) were the principal constituents ofS. montanaoil.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699553

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The leaf oils isolated fromSundacarpus amaruscontained β-selinene (67–77%) and bicyclogermacrene (9–11%) as principal components. Diterpenes were not encountered.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699554

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The aerial parts ofCrithmum maritimumL. (Umbelliferae) collected from Bolu-Abant was hydrodistilled to produce an oil with 0.85% yield. The oil was analyzed by GC/MS. The main components were characterized as sabinene (26.9%), limonene (24.2%) and γ-terpinene (19.3%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699555

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The essential oil isolated by steam distillation from the aerial parts ofSatureja khuzistanicaJamzadwas analyzed by capillary GC and GC/MS. Among 18 compounds identified, the major components were p-cymene (39.6%), carvacrol (29.6%), and γ-terpinene (18.9%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699556

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Volatile components of starfruit were isolated by simultaneous steam distillation/solvent extraction. Fifty-six components were identified (8.9 mg/kg), of which the major ones were butyl acetate, ethyl decanoate and hexadecanoic acid.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699557

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Four popular cultivars of black pepper from Kerala viz. ‘Karimunda,’ ‘Kalluvally,’ ‘Arakulam munda’ and Thommankody' were analyzed for a period of three consecutive seasons for their oil composition. Fifty five compounds were identified in the oils by GC and GC/MS. The main components were α-pinene (2.4–11.4%), β-pinene(2.0–15.27%), δ-3-carene(0.1–21.0%), limonene(9.4–21.9%)and β-caryophyllene (19.8–45.3%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699558

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Steam distilled essential oil from aerial parts ofHerniaria incanawas analyzed by GC/MS. Sixty-two compounds were identified. The dominating substances were represented by a homologous series of alkanes, alkenes, aliphatic alcohols, related aldehydes, ketones, and fatty acids and their methyl esters. The main constituents were 6,10,14-trimethyl 2-pentadecanone (37.6%) and palmitic acid (4.0%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9699559

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor