Determination Of Solasodine Research Articles

Development of an Efficient Extraction Method for Separating Solasodine, an Steroidal Alkaloid, From an Oily Matrix: A Comparison Between LLE and SPE

Aims: In many references of Traditional Iranian Medicine (TIM), there are methods to produce medicinal products from plant fruit based on extraction of active substances into oils. One of these recommendations is to import cucurbit or pumpkin seed oil into an entirely ripe fruit of Solanum melongena plant. In this study for the first time, the extraction of solasodine from the oily matrix has been investigated to find a precise method with suitable extraction recovery.
 Study Design: Original Research Article.
 Place and Duration of Study: The study took place in herbal and traditional medicines research center of Kerman, Iran from February 2015 to November 2017.
 Methodology: Solasodine, an active steroidal alkaloid metabolite of the plant, was used for standardization of the product. Two methods of (Liquid-liquid extraction) LLE and (Solid phase extraction) SPE were evaluated and their conditions were optimized by assessment of seven effective factors at five levels using HPLC as the method of choice for solasodine determination.
 Results: Results showed that LLE and SPE in optimized conditions had recoveries of about 76.5 and 94.7%, respectively. For the extraction of low concentrations of the analyte, the SPE method had better accuracies (88 to 105%), but its precision was less than that of LLE method. In contrast, the LLE method had a higher precision in the whole range while its relevant accuracy was lower. The LOD and LOQ of SPE-HPLC method were 0.2 and 0.6 μg/ml and those of the LLE-HPLC method were 0.2 and 0.7 μg/ml, respectively.
 Conclusion: In general, both methods of LLE-HPLC and SPE-HPLC showed acceptable validation parameters including linearity, precision, accuracy, LOD, and LOQ; and they can be used for routine extraction and determination of solasodine in traditional medicine products.

A New Validated HPLC-DAD Method for Estimation of Solasodine from Solanum nigrum Linn. Extracts and Formulations

A new, simple, accurate and precise HPLC-DAD method has been developed and validated for quantitative determination of solasodine in aerial parts of Solanum nigrum Linn. The column used was C18 (150 mm X 4.6 mm I.D., 5 µm) and mobile phase used was acetonitrile: 10 mM ammonium acetate buffer pH 7.7(65:35,v/v).The flow rate of mobile phase and detection wavelength were kept at 2.0 ml/ min and at 205 nm, respectively. The column oven temperature was set at 40 0 C. The linearity of the method was found over a range of 300-1500 µg/ml with LOD and LOQ of 100 µg/ml and 300 µg/ml, respectively. The method has shown recoveries of solasodine in the range from 100.12 % -106.67 %, with low intra and inter-day % R.S.D. (0.89% and 1.25%, respectively). The method was successfully applied for quantitative evaluation of three extracts and different Ayurvedic formulations for the content of solasodine.

Sequential injection analysis with lab-at-valve (SI-LAV) for the determination of solasodine in Solanum species

The development of sequential injection analysis with lab-at-valve (LAV) semi-automated system on-line liquid-liquid extraction is demonstrated for spectrophotometric determination of solasodine in various Solanum species fruits. The main proposed is semi-automated extractive determination of solasodine using methyl orange as colorimetric reagent. After optimization of the system, sample, reagent and organic solvent were sequentially aspirated into an extraction coil connected to the center of a selection valve, where extraction took place by flow reversal. The aqueous and organic phases were separated in a lab-at-valve unit attracted to one of the ports of the selection valve. The absorption of ion-pair solasodine-methyl orange complex in the organic phase was measured spectrophotometrically at 420 nm. The method performances, including reproducibility, linearity, sensitivity and accuracy, were also evaluated. The proposed method is simple, reproducible and accurate. It was successfully applied to the determination of solasodine in Solanum aculeatissimum Jacq., Solanum violaceum Ortega., Solanum melongena Linn. and Solanum indicum Linn. fruits in Solanaceae family. Results obtained were in good agreement with those obtained by batch wise spectrophotometric method. It is also suitable and useful for determination of solasodine in other medicinal plants.

Determination of solasodine in cell cultures of Solanum laciniatum by high-performance liquid chromatography

A method is proposed for the quantitative determination of solasodine by HPLC on a Millikhrom domestic microcolumn chromatograph. The amounts of solasodine in various cell lines ofSolanum laciniatum have been determined. It has been shown that the genetic transformation leads to a substantial increase in the amount of solasodine in the biomass. Amounts of solasodine in multishoot cultures are comparable with its amount in normal mature plants.

Quantitative method for the determination of solasodine in lobed nightshade grass

Quantitative method for the determination of solasodine in lobed nightshade grass