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Flavones Contents in Extracts from Oroxylum indicum Seeds and Plant Tissue Cultures.

ABSTRACT: Oroxylum indicum (L.) Benth. ex Kurz or Pheka, is a plant in the Bignoniaceae family with various traditional uses. The mature fruits promote anti-helminthic and stomachic effects, while the seeds have been used as a purgative and for the relief of tonsil pain. The young fruits are popularly consumed as vegetables, while the seeds are one of the components in traditional drink formulations. To develop new plant raw material sources, a plant tissue culture technique was used to generate plant tissue cultured samples from the seeds of O. indicum. Plant tissue cultured samples were collected from three different growth stages; 4 days, then at 3 and 9 weeks, and prepared as crude extracts by maceration with ethanol, along with the seed raw material sample. A high performance liquid chromatographic (HPLC) method was used for quantitative analysis of the contents of the three major flavones; baicalin, baicalein, and chrysin in the extracts from the seeds and plant tissue cultured samples of this plant. Baicalin was found in the highest amount among these three flavones in all extracts. The seed extract contained the highest baicalin content (24.24% w/w in the extract), followed by the shoot extract from tissue-cultured plant at week 3 (14.78% w/w of the extract). The amounts of chrysin in all O. indicum showed the same trend as the contents of baicalin, but the amounts were lower, while baicalein was accumulated at the lowest amount among three flavonoids and the amounts were quite stable in all O. indicum extracts. From the results, O. indicum seed and plant tissue cultured extracts have potential as sources of flavones, which could be further developed as health products in the future.

SUBMITTER: Rojsanga P

PROVIDER: S-EPMC7181290 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Flavones Contents in Extracts from <i>Oroxylum indicum</i> Seeds and Plant Tissue Cultures.

Rojsanga Piyanuch P Bunsupa Somnuk S Sithisarn Pongtip P

Molecules (Basel, Switzerland) 20200328 7

<i>Oroxylum indicum</i> (L.) Benth. ex Kurz or Pheka, is a plant in the Bignoniaceae family with various traditional uses. The mature fruits promote anti-helminthic and stomachic effects, while the seeds have been used as a purgative and for the relief of tonsil pain. The young fruits are popularly consumed as vegetables, while the seeds are one of the components in traditional drink formulations. To develop new plant raw material sources, a plant tissue culture technique was used to generate pl ...[more]

PMID: 32231034

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Project description:BackgroundOroxylum indicum fruit extract (OIE) has been reported to inhibit the development of adipocytes. However, the exact mechanism of its metabolic activity is not clearly defined. This study attempted to investigate whether OIE was involved in disrupting the cell cycle, glucose metabolism, and mitochondrial function in 3 T3-L1 cells.MethodsThe effect of the OIE on cell cycle progression was measured by flow cytometry along with observing the expression of the cycle regulator by immunoblotting. The effect of the OIE on glucose metabolism was investigated. The amount of glucose uptake (2-NBDG) influenced by insulin was determined as well as the protein tyrosine phosphorylation (PY20), and glucose transporter4 (GLUT4) expression was determined by immunoblotting assay. Mitochondria are also essential to metabolic processes. This study investigated mitochondrial activity using fluorescent lipophilic carbocyanine dye (JC-1) and mitochondria mass by MitoTracker Green (MTG) staining fluorescence dyes. Finally, cellular ATP concentration was measured using an ATP chemiluminescence assay.ResultsTreatment with OIE plus adipogenic stimulators for 24 h arrested cell cycle progression in the G2/M phase. Moreover, 200 μg/mL of OIE significantly diminished the expression of the insulin receptor (IR) and GLUT4 protein compared to the untreated-adipocytes (P < 0.05). The mitochondrial membrane potential (MMP) was significantly reduced (24 h) and increased (day 12) by OIE compared to untreated-adipocytes (P < 0.05). However, OIE maintained MMP and ATP at a similar level compared to the pre-adipocytes (day 12). Transmission electron microscope (TEM) results demonstrated that OIE could protect mitochondria deformation compared to the untreated-adipocytes.ConclusionThese results suggest that the inhibitory effect of the OIE on adipogenesis may potentially inhibit the cell cycle and phosphorylation of IR, leading to a decrease in glucose uptake to the cells. The OIE also slows down the mitochondrial activity of the early phase of cell differentiation, which can also inhibit the development of fat cells.

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Flavones Contents in Extracts from Oroxylum indicum Seeds and Plant Tissue Cultures.

Publications

Flavones Contents in Extracts from <i>Oroxylum indicum</i> Seeds and Plant Tissue Cultures.

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