Isolation of essential oil from the leaves of Polygonum viscosum Buch-ham. using microwave-assisted enzyme pretreatment followed by microwave hydrodistillation concatenated with liquid–liquid extraction

Chen, Fengli; Jia, Jia; Zhang, Qiang; Yang, Lei; Gu, Hal-Bon

doi:10.1016/j.indcrop.2017.12.024

Cited by 23 publications

(8 citation statements)

References 44 publications

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“…Seeds [168] Vigna radiata (L.) R. Sauropus rostratus Miq. Leaves [55] Piperaceae Piper nigrum L. Seeds [190] Plumbaginaceae Plumbago zeylanica L. Roots [191] Polygonaceae Calligonum polygonoides L. Fruits and stems [192] Polygonum viscosum Buch-ham Leaves [193] Primulaceae Lysimachia foenum-graecum Hance [194] Ranunculaceae Aconitum carmichaeli Dibx. Root [68] Clematis connata D.C.…”

Section: Phytotoxicity: Allelopathy and Autotoxicitymentioning

confidence: 99%

Natural Sources and Bioactivities of 2,4-Di-Tert-Butylphenol and Its Analogs

Zhao

Wang

Lucardi

et al. 2020

Toxins

177

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2,4-Di-tert-butylphenol or 2,4-bis(1,1-dimethylethyl)-phenol (2,4-DTBP) is a common toxic secondary metabolite produced by various groups of organisms. The biosources and bioactivities of 2,4-DTBP have been well investigated, but the phenol has not been systematically reviewed. This article provides a comprehensive review of 2,4-DTBP and its analogs with emphasis on natural sources and bioactivities. 2,4-DTBP has been found in at least 169 species of bacteria (16 species, 10 families), fungi (11 species, eight families), diatom (one species, one family), liverwort (one species, one family), pteridiphyta (two species, two families), gymnosperms (four species, one family), dicots (107 species, 58 families), monocots (22 species, eight families), and animals (five species, five families). 2,4-DTBP is often a major component of violate or essential oils and it exhibits potent toxicity against almost all testing organisms, including the producers; however, it is not clear why organisms produce autotoxic 2,4-DTBP and its analogs. The accumulating evidence indicates that the endocidal regulation seems to be the primary function of the phenols in the producing organisms.

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Section: Phytotoxicity: Allelopathy and Autotoxicitymentioning

confidence: 99%

Natural Sources and Bioactivities of 2,4-Di-Tert-Butylphenol and Its Analogs

Zhao

Wang

Lucardi

et al. 2020

Toxins

177

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“…Figure 7e shows that with an increase in the solid-liquid ratio from 6-10 and microwave time from 35-45 min, the polysaccharide extraction rate gradually increased, and the optimal extraction conditions appeared, indicating that the combination interval with a higher solid-liquid ratio and microwave time was favorable for the extraction of polysaccharides. With increasing microwave power from 385-700 W and microwave time from 35-45 min, the extraction rate of polysaccharides gradually increased (Figure 7f), and the optimal interval appears under the extraction conditions [40].…”

Section: Influence Of Response Surface Optimization Factors On Yieldmentioning

confidence: 98%

“…With the extension of time, the extraction rate will still increase, The extraction rates of polysaccharides and EOs are positively correlated with radiation power (Figure 3b). Under an irradiation power of 700 W, the yields of EOs and polysaccharides were 7.6 mL/kg•DW and 38.6 g/kg•DW, respectively, and numerous active components were released from leaf cells, thus increasing the yield of EOs and polysaccharides [40].…”

Section: Each Parameter On the Yield Of Eo And Polysaccharidementioning

confidence: 99%

An Efficient Approach for Separating Essential Oil and Polysaccharides Simultaneously from Fresh Leaves of Guajava by Microwave-Mediated Hydrodistillation with Lithium Salts and Antibacterial Activity of Essential Oil

et al. 2022

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The essential oils and polysaccharides from guava leaves have important functions. In the process of microwave extraction of plant essential oils and polysaccharides, pretreatment with lithium salts solution is helpful to increase the extraction rate. The experiment was conducted using a single factor method. Results were optimized by principal component analysis and response surface optimization. The optimal conditions were: LiCl dosage 45 μmol, microwave time 40 min, liquid-solid ratio 10, homogenization time 4.2 min, liquid-material ratio 10, and microwave irradiation power 700 W. The highest yield of essential oil and polysaccharide were 10.27 ± 0.58 mL/kg dry weight (DW) and 50.31 ± 1.88 g/kg·DW, respectively. Three verification experiments showed that the extraction rate of the microwave method was higher than that of the traditional heating method. In addition, the bacteriostatic zones reached the maximum 23.7 ± 0.11 mm when the concentration was 40 μL/mL, and the above results have practical significance.

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“…Higher enzyme concentration causes higher degree of cell wall disruption. However, with continuous increase in concentration, a point is reached from where on, further increasing the concentration has almost negligible effect on the yield [34,36,39] and [40]. Some of the research examples where enzymatic pre-treatment is used for EOs extraction can be seen in Table 2.…”

Section: Enzymatic Pre-treatmentmentioning

confidence: 99%

Current trends in essential oil (EO) production

Chakravarty

Parmar

Mandavgane

2021

Biomass Conv. Bioref.

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The increasing demand of essential oils (EOs) as nutraceuticals, food, pharmaceutical, and cosmetic ingredients in the current scenario has opened up new avenues for their large-scale production. India's biodiversity and scientific development promise to make it leading country in aroma business in the coming years. Plant resources contain the natural and aromatic EOs in small quantities which are difficult to extract. These EOs can be produced by different techniques including conventional, nonconventional, and biochemical processing strategies. The combination of conventional and non-conventional techniques has proved to be potential extraction methods. They ensure EO production with shorter extraction time, higher efficiency, and enhanced product quality. There has been a constant urge to develop greener synthesis and extraction procedures for EOs due to the adverse effects caused to the environment by the physical and chemical methods. Researchers are exploring bioengineering techniques to enhance the quality and quantity of EOs using various microorganisms and enzymes. Metabolic engineering and biotransformation can tackle the uncertainty of raw material supply for EOs like the climatic changes, natural disasters, and plant diseases. With high efficiency, specificity, and purity of products, these methods are highly beneficial for future applications. This review presents a detailed description of the current status of EO production, their potential extraction techniques, and life cycle assessment (LCA) of essential oil production. The recent developments in the direction of bioengineering for scalable synthesis of EOs are also highlighted in this review.

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Isolation of essential oil from the leaves of Polygonum viscosum Buch-ham. using microwave-assisted enzyme pretreatment followed by microwave hydrodistillation concatenated with liquid–liquid extraction

Cited by 23 publications

References 44 publications

Natural Sources and Bioactivities of 2,4-Di-Tert-Butylphenol and Its Analogs

Natural Sources and Bioactivities of 2,4-Di-Tert-Butylphenol and Its Analogs

An Efficient Approach for Separating Essential Oil and Polysaccharides Simultaneously from Fresh Leaves of Guajava by Microwave-Mediated Hydrodistillation with Lithium Salts and Antibacterial Activity of Essential Oil

Current trends in essential oil (EO) production

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