scholarly journals Carotenoid Contents of Lycium barbarum: A Novel QAMS Analyses, Geographical Origins Discriminant Evaluation, and Storage Stability Assessment

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5374
Author(s):  
Ruru Ren ◽  
Yanting Li ◽  
Huan Chen ◽  
Yingli Wang ◽  
Lingling Yang ◽  
...  
Keyword(s):  
Standard Method ◽  
Geographical Location ◽  
Storage Condition ◽  
Lycium Barbarum ◽  
External Standard Method ◽  
External Standard ◽  
Single Marker ◽  
And Storage ◽  
Zeaxanthin Dipalmitate ◽  
Β Carotene

Given the standard substances of zeaxanthin and its homologues obtained from Lycium barbarum L. (LB) are extremely scarce and unstable, a novel quantitative analysis of carotenoids by single marker method, named QAMS, was established. Four carotenoids including lutein, zeaxanthin, β-carotene, and zeaxanthin dipalmitate were determined simultaneously by employing trans-β-apo-8′-carotenal, a carotenoid component which did not exist in LB, as standard reference. Meanwhile, β-carotene, another carotenoid constituent which existed in LB, was determined as contrast. The QAMS methods were fully verified and exhibited low standard method difference with the external standard method (ESM), evidenced by the contents of four carotenoids in 34 batches of LB samples determined using ESM and QAMS methods, respectively. HCA, PCA, and OPLS-DA analysis disclosed that LB samples could be clearly differentiated into two groups: one contained LB samples collected from Ningxia and Gansu; the other was from Qinghai, which was directly related to the different geographical location. Once exposed under high humidity (RH 75 ± 5%) at a high temperature (45 ± 5 °C) as compared with ambient temperature (25 ± 5 °C), from day 0 to day 28, zeaxanthin dipalmitate content was significantly decreased, and ultimately, all the decrease rates reached about 80%, regardless of the storage condition. Our results provide a good basis for improving the quality control of LB.

scholarly journals Simultaneous Determination of Four Ingredients in Plantago Depressa by Single Marker

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yang Xu ◽  
Yuejie Wang ◽  
Shengnan Bi ◽  
Yanxue Jia ◽  
Huiwei Bao
Keyword(s):  
Simultaneous Determination ◽  
Standard Method ◽  
Protocatechuic Acid ◽  
Correction Factors ◽  
Active Components ◽  
Relative Correction ◽  
External Standard Method ◽  
External Standard ◽  
Single Marker

Objective. To establish a quantitative analysis of multicomponents by single marker (QAMS) method for the simultaneous determination of 4 active components such as protocatechuic acid, catechin, quercetin, and luteolin in Plantago depressa. Method. 4 active components in Plantago depressa were studied. Quercetin was used as an internal reference to establish the relative correction factors among protocatechuic acid, catechin, and luteolin and calculate the contents of each component; the results were compared with those measured by the external standard method. Results. 4 components showed a good linear relationship in their respective concentration ranges (r > 0.9995). The relative correction factors (fs/k) of protocatechuic acid, catechin, and luteolin were 1.1992, 0.8613, and 1.6069, respectively. The method had good durability. The contents of protocatechuic acid, catechin, and luteolin calculated by QAMS were not significantly different from those measured by the external standard method. Conclusion. QAMS can be used to determine the content of 4 components in Plantago depressa at the same time, and the method is simple, accurate, and can be used for quality control.

scholarly journals Analysis of the HPLC Fingerprint and QAMS for Sanhuang Gypsum Soup

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Yi Peng ◽  
Minghui Dong ◽  
Jing Zou ◽  
Zhihui Liu
Keyword(s):  
Quantitative Analysis ◽  
Standard Method ◽  
Evaluation Method ◽  
Similarity Analysis ◽  
Hplc Fingerprint ◽  
External Standard Method ◽  
Significant Difference ◽  
External Standard ◽  
Single Marker

A valid and encyclopaedic evaluation method for assessing the quality of Sanhuang Gypsum Soup (SGS) has been set up based on analysis of high-performance liquid chromatography (HPLC) fingerprint combined with the quantitative analysis of multicomponents by single marker (QAMS) method, hierarchical cluster analysis (HCA), and similarity analysis. 20 peaks of the common model were obtained and used for the similarity analysis and HCA analysis. Berberine was selected as an internal reference, and the relative correction factors of mangiferin, geniposide, liquiritin, epiberberine, coptisine, baicalin, palmatine, harpagosid, wogonoside, cinnamic acid, cinnamic aldehyde, baicalein, glycyrrhizic acid, and wogonin were established. The accuracy of quantitative analysis of multicomponents by the single-marker method was verified by comparing the contents of the fourteen components calculated by the external standard method with those of the quantitative analysis of multicomponents by the single-marker method. No significant difference was found in the quantitative results of the established quantitative analysis of multicomponents by a single-marker method and an external standard method. In summary, these methods were applied to evaluate the quality of SGS successfully. As a result, these evaluation methods have great potential to be widely used in the quality control of traditional Chinese medicines (TCM).

scholarly journals Simultaneous Determination of Six Active Components in Oviductus Ranae via Quantitative Analysis of Multicomponents by Single Marker

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Shihan Wang ◽  
Yang Xu ◽  
Yanwei Wang ◽  
Huailei Yang ◽  
Zuying Lv ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Standard Method ◽  
Internal Standard ◽  
Active Components ◽  
External Standard Method ◽  
Significant Difference ◽  
External Standard ◽  
Single Marker ◽  
Quantitative Results ◽  
Oviductus Ranae

A method, quantitative analysis of multicomponents by single marker (QAMS), was established in this article to investigate the quality control of a traditional Chinese medicine, Oviductus Ranae. 7-Hydroxycholesterol, 7-ketocholesterol, 4-cholesten-3-one, stigmasterol, 7-dehydrocholesterol, and cholesterol were selected as the indexes of quality evaluation of Oviductus Rana. The determination was achieved on an Agilent HC-C18 column (4.6 mm × 250 mm, 5 μm) using methanol with water (87 : 13 v/v) as mobile phase at the flow rate of 2.0 mL/min. Cholesterol was used as an internal standard to determine the relative correction factors between cholesterol and other steroidal constituents in Oviductus Ranae. The contents of those steroidal constituents were calculated at the same time. To evaluate the QAMS method, an external standard method was used to determine the contents of six steroidal constituents. No significant difference was observed when comparing the quantitative results of QAMS with the results of external standard method. The proposed QAMS method was proved to be accurate and feasible based on methodological experiments. QAMS provided a simple, efficient, economical, and accurate way to control the quality of Oviductus Ranae.

scholarly journals A Practical Method for Determination of Nine Nucleosides in Tricholoma matsutake by UPLC/MS and Quantitative Analysis of Multicomponents Using Single Marker Method

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Li Yong ◽  
An-Qin Leng ◽  
Zhi-Xiang Yang ◽  
Ying Xue
Keyword(s):  
Quantitative Analysis ◽  
Standard Method ◽  
Practical Method ◽  
Ultra Performance Liquid Chromatography ◽  
Assessment Method ◽  
Tricholoma Matsutake ◽  
Internal Reference ◽  
External Standard Method ◽  
External Standard ◽  
Single Marker

Nucleosides can be used as quality evaluation indicators of Tricholoma matsutake. In this work, a new ultra-performance liquid chromatography-tandem mass spectrometry (UPLC/MS) strategy for quantitative analysis of multiple components using a single marker (QAMS) was proposed to determine nine nucleosides (adenosine, cytidine, guanosine, inosine, uridine, 2′-deoxyadenosine, 2′-deoxycytidine, 2′-deoxyguanosine, and 2′-deoxyuridine) in T. matsutake. Guanosine was set as the internal reference substance, whose content in T. matsutake was determined using the conventional external standard method. Relative correction factors (RCFs) between guanosine and eight other nucleosides were measured. The concentrations of the eight components were calculated with the obtained RCFs by QAMS. An ultrasonic extraction method is used for sample preparation. This method was validated to be sensitive, precise, and accurate with the LODs of 0.31–1.9 ng, the overall intraday and interday variations less than 4.08%, and the overall recovery over 89.0%. The correlation coefficients (r2) of the calibration curves were higher than 0.9918. The values of vector angle analysis were above 0.99845, which indicates no significant differences between the conventional external standard method and the present QAMS method. As far as we know, this is also the first report of UPLC/MS analysis of nucleoside compounds by QAMS, providing an efficient and feasible quality assessment method for other natural products containing nucleosides.

Detection of 9α-OH-AD Prepared by Biotransformation

2013 ◽  
Vol 821-822 ◽  
pp. 1005-1008
Author(s):  
Li Min Ma ◽  
Li Cui ◽  
Yu Hang Zhao
Keyword(s):  
Quality Control ◽  
Correlation Coefficient ◽  
Flow Rate ◽  
Standard Method ◽  
Mobile Phase ◽  
Average Recovery ◽  
Rp Hplc ◽  
External Standard Method ◽  
External Standard

Detection of 9а-OH-AD prepared by biotransformation by RP-HPLC directly was studied.The detection is performed on a Kromasil 100-5C18(4.6×250mm) column, using methanol:water(7:3,v/v)as mobile phase,0.8mL•min-1flow rate and external standard method,deteced at 242nm.There is a good line correlaction between peak and content in range of 0.01-0.20g/L,the correlation coefficient is 0.9942,the average recovery is 99.09% with a relative stand deviation of 0.89%(n=5).The method is simple,stable,accurate and reliable for quality control of 9а-OH-AD.

scholarly journals Mass Spectral Characterization and UPLC Quantitation of 3-Deoxyanthocyanidins in Sorghum bicolor Varietals

2018 ◽  
Vol 101 (1) ◽  
pp. 242-248
Author(s):  
Nathan P Stern ◽  
Jatinder Rana ◽  
Amitabh Chandra ◽  
John Balles
Keyword(s):  
Sorghum Bicolor ◽  
Dietary Supplement ◽  
High Throughput ◽  
Standard Method ◽  
High Throughput Screening ◽  
Polyphenolic Compounds ◽  
Mass Spectral ◽  
External Standard Method ◽  
External Standard ◽  
Method Accuracy

Abstract A quantitative ultra-performance LC (UPLC) method was developed and validated to successfully separate, identify, and quantitate the major polyphenolic compounds present in different varieties of sorghum (Sorghum bicolor) feedstock. The method was linear from 3.2 to 320 ppm, with an r2 of 0.99999 when using luteolinidin chloride as the external standard. Method accuracy was determined to be 99.5%, and precision of replicate preparations was less than 1% RSD. Characterization by UPLC-MS determined that the predominant polyphenolic components of the sorghum varietals were 3-deoxyanthocyanidins (3-DXAs). High-throughput screening for 3-DXA identified four unique classes within the sorghum varieties. Certain feedstock varieties have been found to have a high potential to not only be plant-based colorants, but also provide significant amounts of bioactive 3-DXAs, making them of unique interest to the dietary supplement industry.

scholarly journals Quality Evaluation of Polar and Active Components in Crude and ProcessedFructus Corniby Quantitative Analysis of Multicomponents with Single Marker

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Yuhong Jiang ◽  
Hui Chen ◽  
Liling Wang ◽  
Jing Zou ◽  
Xiao Zheng ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Active Components ◽  
Internal Reference ◽  
External Standard Method ◽  
Significant Difference ◽  
External Standard ◽  
Single Marker ◽  
Quantitative Results ◽  
Processed Products

Objective. To develop a quantitative analysis of multicomponents by single-marker (QAMS) method for the simultaneous determination of polar active components inFructus Corni.Methods. Loganin was selected as the internal reference, and the relative correction factors (RCFs) of gallic acid, 5-hydroxymethyl-2-furfural, morroniside, sweroside, cornin, 7α-O-methylmorroniside, 7β-O-methylmorroniside, 7α-O-ethylmorroniside, 7β-O-ethylmorroniside, and cornuside were established. The contents of multicomponents were then calculated based on their RCFs, respectively. Contents of the 11 components were also calculated by external standard method and compared with those of the QAMS method.Results.The contents of the 11 components in 21 crude and 10 processedFructus Corniproducts were measured. No significant difference was found in the quantitative results of the QAMS and external standard methods.Conclusion. QAMS could serve as an accurate and convenient method in determining the polar and active components inFructus Corniand its processed products.

scholarly journals Comparison of Functional Components and Antioxidant Activity of Lycium barbarum L. Fruits from Different Regions in China

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2228 ◽  
Author(s):  
Youyuan Lu ◽  
Sheng Guo ◽  
Fang Zhang ◽  
Hui Yan ◽  
Da-Wei Qian ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Functional Foods ◽  
Antioxidant Activities ◽  
Total Phenolic ◽  
Total Carotenoid ◽  
Lycium Barbarum ◽  
Phenolic Components ◽  
Functional Components ◽  
Zeaxanthin Dipalmitate ◽  
Β Carotene

The fruit of Lycium barbarum L. (FLB) has been used as medicines and functional foods for more than 2000 years in East Asia. In this study, carotenoid, phenolic, flavonoid, and polysaccharide contents as well as the antioxidant activities of FLB from 13 different regions in China from a total of 78 samples were analyzed. The results showed that total carotenoid contents ranged from 12.93 to 25.35 mg β-carotene equivalents/g DW. Zeaxanthin dipalmitate was the predominant carotenoid (4.260–10.07 mg/g DW) in FLB. The total phenolic, total flavonoid, and total polysaccharide contents ranged from 6.899 to 8.253 mg gallic acid equivalents/g DW, 3.177 to 6.144 mg rutin equivalents/g DW, and 23.62 to 42.45 mg/g DW, respectively. Rutin content ranged from 0.1812 to 0.4391 mg/g DW, and ferulic acid content ranged from 0.0994 to 0.1726 mg/g DW. All of these FLB could be divided into two clusters with PCA analysis, and both individual carotenoids and total carotenoid contents could be used as markers for regional characterization. The phenolic components were the main substance for the antioxidant activity of FLB. Considering the functional component and antioxidant activities, FLB produced in Guyuan of Ningxia was the closest to Daodi herbs (Zhongwei of Ningxia), which is commercially available high quality FLB. The results of this study could provide guidance for comprehensive applications of FLB production in different regions.

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