Comparative evaluation of chemical variation and post-harvest processing of Clerodendrum phlomidis L.f. essential oils from different locations in southern India

IF 1.4 4区生物学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biochemical Systematics and Ecology Pub Date : 2025-05-09 DOI:10.1016/j.bse.2025.105035

Chandraprakash Kumarasamy , Pranav Murali Sharma , Krishnamoorthy Devanathan , Sundaresan Velusamy , V.S. Pragadheesh

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Abstract

Clerodendrum phlomidis L.f. is a medicinal shrub found across dry terrains in tropical or sub-tropical regions. Essential oils (EO) from four different accessions at separate locations in southern India were extracted by hydro-distillation. GC and GC-MS analyses of the EO showed (E)-caryophyllene as the major compound in all the samples, ranging from 26.42 to 53.41 %. α-Humulene, linalool, phytol, and caryophyllene oxide were the other major compounds found in the EO of C. phlomidis. Post-harvest processing of C. phlomidis was optimized at different shade drying durations to study the EO yield and percentage of (E)-caryophyllene. Seven days of shade drying provides maximum yield of EO and (E)-caryophyllene content. The major compound, (E)-caryophyllene, was also confirmed by NMR analysis of the essential oil. (E)-Caryophyllene is a plant secondary metabolite with several biological properties and this is the first report on the chemical composition of the (E)-caryophyllene rich chemotype of C. phlomidis.

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印度南部不同产地油树精油化学变化及采收后加工的比较评价

在热带或亚热带地区的干燥地区发现了一种药用灌木。精油（EO）从四个不同的加入在不同的地点在印度南部的水蒸馏提取。气相色谱和气相色谱-质谱分析表明，(E)-石竹烯是所有样品的主要化合物，含量在26.42 ~ 53.41%之间。α-葎草烯、芳樟醇、叶绿醇和氧化石竹烯是黄菖蒲精油的主要成分。对采后加工工艺进行了优化，研究了不同遮荫干燥时间下石竹的EO产量和石竹烯(E)-石竹烯的含量。遮荫干燥7天，EO和(E)-石竹烯含量最高。主要化合物(E)-石竹烯也通过精油的核磁共振分析得到了证实。(E)-石竹烯是一种具有多种生物学特性的植物次生代谢产物，本文首次报道了C. phlomidis富(E)-石竹烯化学型的化学成分。

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来源期刊

Biochemical Systematics and Ecology 生物-进化生物学

CiteScore

3.00

自引率

12.50%

发文量

147

审稿时长

43 days

期刊介绍： Biochemical Systematics and Ecology is devoted to the publication of original papers and reviews, both submitted and invited, in two subject areas: I) the application of biochemistry to problems relating to systematic biology of organisms (biochemical systematics); II) the role of biochemistry in interactions between organisms or between an organism and its environment (biochemical ecology). In the Biochemical Systematics subject area, comparative studies of the distribution of (secondary) metabolites within a wider taxon (e.g. genus or family) are welcome. Comparative studies, encompassing multiple accessions of each of the taxa within their distribution are particularly encouraged. Welcome are also studies combining classical chemosystematic studies (such as comparative HPLC-MS or GC-MS investigations) with (macro-) molecular phylogenetic studies. Studies that involve the comparative use of compounds to help differentiate among species such as adulterants or substitutes that illustrate the applied use of chemosystematics are welcome. In contrast, studies solely employing macromolecular phylogenetic techniques (gene sequences, RAPD studies etc.) will be considered out of scope. Discouraged are manuscripts that report known or new compounds from a single source taxon without addressing a systematic hypothesis. Also considered out of scope are studies using outdated and hard to reproduce macromolecular techniques such as RAPDs in combination with standard chemosystematic techniques such as GC-FID and GC-MS.