Enzyme-assisted microwave hydro-distillation essential oil from Fructus forsythia, chemical constituents, and its antimicrobial and antioxidant activities

Jiao, Jiao; Fu, Yujie; Zu, Yuangang; Luo, Meng; Wang, Wei; Zhang, Lin; Ji, Li

doi:10.1016/j.foodchem.2012.02.114

Cited by 79 publications

(60 citation statements)

References 28 publications

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“…Notably, four of these six compounds were oxygenated monoterpenes (oxygenated monoterpene 1, sabinene hydrate, camphor, and α-terpineol), a class of terpenoids noted for strong antifungal activity, usually more fungistatic than nonoxygenated monoterpenes. (Bakkali et al 2008;Hussain et al 2011;Jiao et al 2012;Zouari et al 2011). Most of the de novo compounds were detected in relatively low concentrations (0.09-0.36 mg g −1 dw) except for de novo 3, a diterpene that had a mean concentration of 5.4 mg g −1 but was rarely detected.…”

Section: Discussionmentioning

confidence: 99%

Strong Induction of Minor Terpenes in Italian Cypress, Cupressus sempervirens, in Response to Infection by the Fungus Seiridium cardinale

Achotegui-Castells

Danti²,

Llusià

et al. 2015

J Chem Ecol

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Seiridium cardinale, the main fungal pathogen responsible for cypress bark canker, is the largest threat to cypresses worldwide. The terpene response of canker-resistant clones of Italian cypress, Cupressus sempervirens, to two differently aggressive isolates of S. cardinale was studied. Phloem terpene concentrations, foliar terpene concentrations, as well as foliar terpene emission rates were analyzed 1, 10, 30, and 90 days after artificial inoculation with fungal isolates. The phloem surrounding the inoculation point exhibited de novo production of four oxygenated monoterpenes and two unidentified terpenes. The concentrations of several constitutive mono-and diterpenes increased strongly (especially α-thujene, sabinene, terpinolene, terpinen-4-ol, oxygenated monoterpenes, manool, and two unidentified diterpenes) as the infection progressed. The proportion of minor terpenes in the infected cypresses increased markedly from the first day after inoculation (from 10 % in the control to 30-50 % in the infected treatments). Foliar concentrations showed no clear trend, but emission rates peaked at day 10 in infected trees, with higher δ-3-carene (15-fold) and total monoterpene (10-fold) emissions than the control. No substantial differences were found among cypresses infected by the two fungal isolates. These results suggest that cypresses activate several direct and indirect chemical defense mechanisms after infection by S. cardinale.

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Section: Discussionmentioning

confidence: 99%

Strong Induction of Minor Terpenes in Italian Cypress, Cupressus sempervirens, in Response to Infection by the Fungus Seiridium cardinale

Achotegui-Castells

Danti²,

Llusià

et al. 2015

J Chem Ecol

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“…Metode kombinasi antara metode konvensional dengan metode non konvensional merupakan salah satu metode dalam melakukan proses ekstraksi seperti pengambilan minyak atsiri dari Frustus forsythia dengan menggunakan metode penyulingan air (hydro distillation) dengan bantuan gelombang mikro (MAE+HD) [5], ekstraksi minyak atsiri dari Elettaria cardamomum maton menggunakan metode hydro distilation dengan bantuan Ultrasonic assisted extraction [11]. Selain metode kombinasi sebelumnya, kombinasi antar metode ekstraksi atau penyulingan non konvensional juga membuktikan keberhasilan yang cukup signifikan.…”

Section: Pendahuluanunclassified

Intensification of Essential Oil Distillation Process of Kaffir Lime's Leaf Using Ultrasound Followed by Microwave Assisted Extraction (US-MAE) Method

Gotama¹,

Rahman²,

Anjarwadi³

2017

IJEO

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“…Enzymatic treatment is also a matrix preparatory step, to denature its structure in order to activate the final extraction. Essential oils containing matrixes can be treated by enzyme to facilitate their extraction by hydrodistillation [35]. As enzymes possess a high turnover rate, some enzymes can be expensive or difficult to obtain in large quantities.…”

Section: Principles and Processmentioning

confidence: 99%

“…Jiao et al [35] investigated the extraction process enhancement of Forsythia suspense fruit essential oil by an enzymatic pretreatment leading up to microwaveassisted hydrodistillation. The whole process was done with microwaves as the medium of heat source.…”

Section: Applicationsmentioning

confidence: 99%

Water as Green Solvent for Extraction of Natural Products

Petigny

Özel

Périno

et al. 2015

Green Extraction of Natural Products

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IntroductionWater is the most abundant molecule on the earth, covering 70% of its surface. Life processes on this planet are crucially dependent on the presence of water. It is often recognized that water has tremendous benefits as a green extraction solvent because it is not only inexpensive and environmentally benign but it is also nonflammable and nontoxic, providing opportunities for clean processing and pollution prevention. The water molecule contains three nuclei, one modestly heavy (oxygen), and two light ones (hydrogen). Because of water's electronic structure, the oxygen atom has a slight negative charge on it and the hydrogen atoms have a slightly positive charge [1]. When water molecules are closed together, their positive and negative regions are attracted, these attractive forces are known as hydrogen bonds. The energy associated with a hydrogen bond is 8-40 kJ/mol. The O-H bond lengths are 0.9572 Å and the average HOH bond angle is 104.52 ∘ , slightly smaller than the tetrahedral angle (109.5 ∘ ). The molecule is very small with a hard sphere diameter of 2.75 Å. The smallness of the water molecule has important consequences for the hydration of solutes. The contours of the total electron density in the HOH plane of the water molecule indicate a shape not far from spherical. The water molecule has a dipole moment of 1.85 D with two partial positive charges on the hydrogen atoms and a single zone of negative charge on the oxygen atom.It is well known that water molecules are strongly associated in the liquid phase by H-bonding. Hydrogen bonds result dominantly from electrostatic interactions with a light contribution of covalent bond formation. The H-bond interactions in liquid water constitute a 3-D H-bond network with localized and structured clustering. Therefore, the liquid structure is not determined by hard-core repulsions between the individual water molecules but rather by intermolecular and directional H-bonding. The broad variation of H-bond angles further demonstrates the noncrystalline arrangement of the water molecules and appears to indicate that some bond angle distortion in the H-bonds is rather easily allowed in the liquid. It is important to recognize that intermolecular interaction Green Extraction of Natural Products: Theory and Practice, First Edition. Edited by Farid Chemat and Jochen Strube.

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Enzyme-assisted microwave hydro-distillation essential oil from Fructus forsythia, chemical constituents, and its antimicrobial and antioxidant activities

Cited by 79 publications

References 28 publications

Strong Induction of Minor Terpenes in Italian Cypress, Cupressus sempervirens, in Response to Infection by the Fungus Seiridium cardinale

Strong Induction of Minor Terpenes in Italian Cypress, Cupressus sempervirens, in Response to Infection by the Fungus Seiridium cardinale

Intensification of Essential Oil Distillation Process of Kaffir Lime's Leaf Using Ultrasound Followed by Microwave Assisted Extraction (US-MAE) Method

Water as Green Solvent for Extraction of Natural Products

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