Chemical composition of the volatiles ofDecalepis hamiltonii (Wight &amp; Arn)

Nagarajan, S.; Rao, L. Jagan Mohan; Gurudutt, K. N.

doi:10.1002/1099-1026(200101/02)16:1<27::aid-ffj937>3.0.co;2-f

Cited by 51 publications

(28 citation statements)

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“…Richards (1978) reported that plant extracts or essential oils of plant origin are highly lipophilic and therefore have the ability to penetrate the insect cuticle. Roots of D. hamiltonii have been reported to contain aldehydes, inositols, saponins, amyrins, lupeols and volatile fl avour compounds such as 2-hydroxy-4-methoxybenzaldehyde, vanillin, 2-phenylethyl alcohol, benzaldehyde (Nagarajan et al 2001). Any of these compounds along with other unknown ingredients could be responsible for the insecticidal activity of the extract against stored product insects.…”

Section: Resultsmentioning

confidence: 99%

Insecticidal activity of the root extract of Decalepis hamiltonii against stored-product insect pests and its application in grain protection

2010

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Root extracts of Decalepis hamiltonii were tested for insecticidal activity against the stored products pests, Rhyzopertha domonica, Sitophilus oryzae, Stigobium pancieum, Tribolium castaneum and Callosobruchus chinensis, in residual and contact toxicity bioassays. Methanolic extract showed LC50 value of 0.14 mg/cm(2) for all the test species in a filter paper residual bioassay. The extract was effective as a grain protectant for wheat and green gram. Reduction of F1 progeny was observed in treated grain stored for 3-4 months. The extract did not affect the germination of the treated grains. Our results indicate that methanolic extracts of D. hamiltonii has a potential to control stored product pests and could serve as a natural grain protectant.

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Section: Resultsmentioning

confidence: 99%

Insecticidal activity of the root extract of Decalepis hamiltonii against stored-product insect pests and its application in grain protection

2010

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“…The medium supplemented with 1.0 mg l −1 NAA was best to produce maximum biomass (Table 1). Even the number of roots (4-3) was greater in the presence of 1.0 mg l −1 NAA compared with IAA or IBA (1-2) along with more laterals (10)(11)(12)(13)(14)(15) and an elongation of 1.8-3.2 cm. The initiation of laterals was started from the 18th day.…”

Section: Resultsmentioning

confidence: 99%

“…20 Field-grown one-year-old plants, with tuberous roots of size 1.0-1.5 cm diameter, contained 120-140 µg g −1 dry weight of 2H4MB. 15 However, in the present study in a 45 day period, in vitro raised normal roots produced 40 µg g −1 dry weight of this compound. At this rate, in a one-year period, 320 µg g −1 dry weight of the compound could be obtained using in vitro normal root cultures, which is 2.7 times more than normal field-grown plant roots.…”

Section: Resultsmentioning

confidence: 99%

Production of a root‐specific flavour compound, 2‐hydroxy‐4‐methoxy benzaldehyde by normal root cultures of Decalepis hamiltonii Wight and Arn (Asclepiadaceae)

2004

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The flavour compound 2-hydroxy-4-methoxy benzaldehyde from normal roots of swallow root (Decalepis hamiltonii) raised in vitro was extracted with dichloromethane, evaporated to dryness and dissolved in ethanol for qualitative (TLC) and quantitative (GC-MS) analysis. Maximum root biomass and the maximum content of flavour compound (40 ± 2.1 µg g −1 dry weight) were recorded after 45 days of growth on Murashige and Skoog medium containing 1.0 mg l −1 α-naphthaleneacetic acid.

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“…The active compounds present in Decalepis are HMB, vanillin, and other vanillin-like isomers. Among the volatile oil that can be extracted from the naturally grown root (0.68%), HMB was found to be the major component (96%) [35] produced primarily in roots and in other parts of the plant this metabolite is negligible, which is why the root is favored for making pickles, digestive drinks, as an appetizer, vitalizer, blood purifier, tonic, demulcent, diaphoretic, diuretic, and tonic [36]. It possesses potent antioxidant properties [37], antiulcer [38], anti-inflammatory, antipyretic [39], and gastroprotective activities.…”

Section: Introductionmentioning

confidence: 99%

2-Hydroxy-4-Methoxybenzaldehyde, an Astounding Food Flavoring Metabolite: A Review

Rathi¹,

Harwalkar²,

Jayashree³

et al. 2017

Asian J Pharm Clin Res

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Objective: Rich endowment of traditional knowledge plays a critical role in health care, food security, culture, environment and development. Traditional knowledge is also widely used by the aromatic, flavoring, food and health industries. Plant-based traditional medicine has often been used to identify and fast-track the development of modern food and drugs. Plants synthesize such wide array of secondary metabolites that includes alkaloids, glucosinolates, terpenoids and phenylpropanoids. This study is aimed to review on indigenous and exotic medicinal plants containing an astounding food flavoring metabolite; 2-hydroxy-4-methoxybenzaldehyde (HMB). Material and Method:The review focuses on the isomer of vanillin, 2-hydroxy-4-methoxybenzaldehyde, also called MBALD, HMB, or 2H4MB, a flavor compound that is generally found in the roots and rhizomes of medicinal plants. This food flavoring phenylpropenoid is one of the least investigated isomers of vanillin. HMB is known to exhibit a wide array of medicinal properties. Though the molecular role of these metabolites remains largely unknown, they are known to play a key role in plant-environment interactions/stress response/defence signaling and application in pharmaceutical and nutraceutical industries. Discussion and Conclusion:One of the key secondary metabolites is the group of phenylproponoids synthesized either through shikimic acid pathway or the malonate/acetate pathway. Phenylalanine ammonia lyase (PAL) is the enzyme involved in phenylpropanoid pathway catalysing the deamination of phenylalanine to synthesize cinnamic acid that subsequently synthesizes variety of phenylpropanoid products. Inspite of its medicinal importance, the regulatory molecular mechanism underlying the biosynthetic pathway is largely unknown.

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Chemical composition of the volatiles ofDecalepis hamiltonii (Wight & Arn)

Cited by 51 publications

References 1 publication

Insecticidal activity of the root extract of Decalepis hamiltonii against stored-product insect pests and its application in grain protection

Insecticidal activity of the root extract of Decalepis hamiltonii against stored-product insect pests and its application in grain protection

Production of a root‐specific flavour compound, 2‐hydroxy‐4‐methoxy benzaldehyde by normal root cultures of Decalepis hamiltonii Wight and Arn (Asclepiadaceae)

2-Hydroxy-4-Methoxybenzaldehyde, an Astounding Food Flavoring Metabolite: A Review

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