Higher isoprenoids—II

Deshmane, Sharad S.; Dev, Sukh

doi:10.1016/s0040-4020(01)90858-0

Cited by 27 publications

(5 citation statements)

References 28 publications

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“…Some minor sterols, such as fucosterol (5.43%); gramisterol (3.78%); stigmast-7-en-3-ol, (3␤,5␣,24S)-(3.54%); stigmasta-4,6,22-trien-3␣-ol (0.91%), and cholest-8(14)-en-3␤-ol acetate (3.05%) were also identified by comparison of their mass spectra fragmentation pattern with the MS data of corresponding compounds obtained from the NIST MS Library, Version 2005. However, brassicasterol, 24-methyl-and 24-ethyl-lophenol, stigmast-5-en-3,7-diol, previously reported located in Indian sugarcane [6], were not detected in our extract.…”

Section: Gc-ms Analysis Of Phytosterolscontrasting

confidence: 69%

“…Stigmasterol (31%), campesterol (19%), and β‐sitosterol (45.8%) were isolated from sugarcane wax extraction as the principal sterols . Some minor steroids such as, brassicasterol, 24‐methyl‐, and 24‐ethyl‐lophenol, stigmast‐5‐en‐3,7‐diol have also been identified . To our knowledge, an elaborate study on the identification of steroids in sugarcane is still limited.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extraction optimization by response surface methodology: Purification and characterization of phytosterol from sugarcane (Saccharum officinarum L.) rind

Feng

Luo

Zhong

et al. 2014

J of Separation Science

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A green, simple, and effective method for the extraction of sugarcane lipids from sugarcane rind was investigated by response surface methodology. The optimum conditions of technological progress obtained through response surface methodology were as follows: liquid-to-solid ratio 7.94: 1 mL/g, extraction temperature 50°C and extraction time 5.98 h. The practical sugarcane lipids extraction yield was 6.55 ± 0.28%, which was in good consistence with the predicted extraction yield of 6.47%. The results showed that the sugarcane lipids extraction yield obtained in optimum conditions increased by 1.16∼7.28-fold compared to the yields obtained in single-factor experiments. After saponification and SPE steps, the nonsaponifiable fraction of sugarcane lipids was analyzed by gas chromatography with mass spectrometry and high-performance liquid chromatography. β-Sitosterol, stigmasterol, and campesterol were the prevailing phytosterols in the sample, while fucosterol, gramisterol, stigmast-7-en-3-ol, (3β,5α,24S)-, stigmasta-4,6,22-trien-3α-ol, and cholest-8(14)-en-3β-ol acetate were also identified as minor steroids. Furthermore, the content of β-sitosterol and a mixture of campesterol and stigmasterol (quantified by high-performance liquid chromatography) was 44.18 mg/100 g dry weight and 43.20 mg stigmasterol/100 g dry weight, respectively. Our results indicate that sugarcane rind is a good source of phytosterol.

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Section: Gc-ms Analysis Of Phytosterolscontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Extraction optimization by response surface methodology: Purification and characterization of phytosterol from sugarcane (Saccharum officinarum L.) rind

Feng

Luo

Zhong

et al. 2014

J of Separation Science

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“…Taraxer-14-en-3β-ol ME, arbor-9(11)-en-3α-ol ME and arbor-9(11)-en-3β-ol ME have also been isolated from various dicots (Diospyros ferrea, Bosistoa sp. and Mimusops littoralis; Deshmane and Dev, 1971). Finally, Pinaceae (Rowe and Bower, 1965) and Burseraceae (Uyeo et al, 1968) have been cited as sources of PTMEs but, in the case of Pinaceae, the compounds were of the serratane-type.…”

Section: Biological Sources Of Ptmesmentioning

confidence: 99%

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil)

Jacob

Disnar

Boussafir

et al. 2005

Organic Geochemistry

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The lipid extracts of sediments collected from the Quaternary filling of a tropical lacustrine series (Lagoa do Caçó, Brazil) were investigated by gas chromatography-mass spectrometry (GC-MS). Various pentacyclic triterpene 3-methyl ethers (PTMEs) were present in the neutral fraction. Comparison of retention times and mass spectra with available standards allowed us to certify the presence of olean-12-en-3β-ol ME (β-amyrin ME), olean-18-en-3β-ol ME (miliacin), taraxer-14-en-3β-ol ME (crusgallin), fern-9(11)-en-3β-ol ME (arundoin) and arbor-9(11)-en-3β-ol ME (cylindrin). The following other compounds coud also be tentatively identified from their GC-MS characteristics: urs-12-en-3β-ol ME, bauer-7-en-3β-ol ME and fern-8-en-3β-ol ME. Other compounds such as possible 3α isomers of the PTMEs as well as di-or tri-unsaturated counterparts might be PTME diagenetic derivatives. According to previous chemotaxonomic studies, all these compounds most probably originate from Gramineae that used to colonize the savannas of Northern Brazil at the time of deposition.

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“…Consequently, the product was characterized as 5a-stigmastan-3fl,5,616-triol (V). The identity of the triol was finally confirmed by direct comparison with an authentic sample synthesized from sitosterol (Desmane & Dev, 1971). The enzymic formation of the metabolites is rationalized in Scheme 1.…”

Section: Extraction and Isolation Oftransformed Productsmentioning

confidence: 87%