scholarly journals LC-QTOF-MS Analysis and Activity Profiles of Popular Antioxidant Dietary Supplements in Terms of Quality Control

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Elwira Sieniawska ◽  
Tomasz Baj ◽  
Rafal Sawicki ◽  
Aleksandra Wanat ◽  
Krzysztof Kamil Wojtanowski ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Quality Control ◽  
Statistical Analysis ◽  
Dietary Supplements ◽  
Dietary Supplement ◽  
Chemical Constituents ◽  
Substantial Part ◽  
Ms Analysis ◽  
Chemical Groups

The dietary supplements with claimed antioxidant activity constitute a substantial part of the dietary supplement market. In this study, we performed the LC-QTOF-MS analysis and investigated the activity profiles of popular antioxidant dietary supplements from different chemical groups in terms of quality control. The commonly used antioxidant tests and statistical analysis revealed that substantial part of the results was comparable if 1 g sample was considered, but while comparing single and daily doses, significant differences in antioxidant values were noticed in all assays. The best antioxidant activity was obtained in ORAC assay (from 142 to 13814 μM of Trolox equivalents per 1 g of sample), and the strongest correlation occurred between TPC and ORAC. The LC-QTOF-MS analysis revealed that catechins were present in samples having the best antioxidant activity and that dietary supplements showing the weakest activity contained very small amount of any chemical constituents.

scholarly journals Optimization of spectrophotometric method for determination nattokinase activity in dietary supplements

2020 ◽  
Vol 3 (2) ◽  
pp. 96-103
Author(s):  
Dieu Thu Nguyen Thi ◽  
Dung Hoang Viet ◽  
Hong Ngoc Nguyen Thi ◽  
Thanh An Vu Thi ◽  
Thanh Hoa Mac Thi ◽  
...  
Keyword(s):  
Quality Control ◽  
Reaction Time ◽  
Dietary Supplements ◽  
Dietary Supplement ◽  
Reaction Temperature ◽  
Spectrophotometric Method ◽  
Fibrinolytic Activity ◽  
Valuable Contribution ◽  
Label Product ◽  
Measured Activity

Nattokinase is an enzyme with a strong fibrinolytic activity that can be used for preventing thrombolytic diseases. The fibrinolytic activity of the Nattokinase in dietary supplements is determined by spectrophotometric method. In this study, the conditions of the assay were examined and finally optimized as pH: 8.5, reaction temperature: 40oC, and reaction time: 60 minutes. The proposed method was validated and successfully applied to determine the Nattokinase activity in 10 dietary supplements. The results showed that the proportion of measured activity compared to label product activity were within in the range 79.1 - 98.0%. The effect of herbal compounds and excipients on Nattokinase activity were also surveyed. From the evaluated results and application to commercial samples, this method will be a valuable contribution to quality control of dietary supplement products containing Nattokinase.  

scholarly journals Chemical constituents and HRESI-MS analysis of an Algerian endemic plant - Verbascum atlanticum batt. - extracts and their antioxidant activity

2019 ◽  
Vol 34 (20) ◽  
pp. 3008-3012 ◽  
Author(s):  
Halima Khentoul ◽  
Chawki Bensouici ◽  
Fernando Reyes ◽  
Domenico Albanese ◽  
Djamel Sarri ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents ◽  
Endemic Plant ◽  
Ms Analysis

scholarly journals An Integrated Approach Exploring the Synergistic Mechanism of Herbal Pairs in a Botanical Dietary Supplement: A Case Study of a Liver Protection Health Food

2020 ◽  
Vol 2020 ◽  
pp. 1-14 ◽  
Author(s):  
Liang Chen ◽  
Chun Hu ◽  
Molly Hood ◽  
Juntao Kan ◽  
Xiaona Gan ◽  
...  
Keyword(s):  
Dietary Supplements ◽  
Dietary Supplement ◽  
Chemical Constituents ◽  
Integrated Approach ◽  
Pathway Enrichment Analysis ◽  
Specific Response ◽  
Receptor Signaling ◽  
Health Food ◽  
Liver Protection ◽  
Synergistic Mechanism

Herbal pairs are used as a bridge between single herb and polyherbal formulas in Traditional Chinese Medicine (TCM) to provide rationale for complicated TCM formulas. The effectiveness and rationality of TCM herbal pairs have been widely applied as a strategy for dietary supplements. However, due to the complexity of the phytochemistry of individual and combinations of herbal materials, it is difficult to reveal their effective and synergistic mechanisms from a molecular or systematic point of view. In order to address this question, UPLC-Q-TOF/MS analysis and System Pharmacology tools were applied to explore the mechanism of action, using a White Peony (Paeoniae Radix Alba) and Licorice (Glycyrrhizae Radix et Rhizoma)-based dietary supplement. A total of sixteen chemical constituents of White Peony and Licorice were isolated and identified, which interact with 73 liver protection-related targets. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were then performed along with network analysis. Results showed that the synergistic mechanism of the White Peony and Licorice herbal pair was associated with their coregulation of bile secretion and ABC transporter pathways. In addition, Licorice exhibits a specific response to drug and xenobiotic metabolism pathways, whereas White Peony responds to Toll-like receptor signaling, C-type lectin receptor signaling, IL-17 signaling, and TNF signaling pathways, resulting in the prevention of hepatocyte apoptosis and the reduction of immune and inflammation-mediated liver damage. These findings suggest that a White Peony and Licorice herbal pair supplement would have a liver-protecting benefit through complimentary and synergistic mechanisms. This approach provides a new path to explore herbal compatibility in dietary supplements derived from TCM theory.

scholarly journals GC-MS Analysis of Chemical Constituents and in vitro Antioxidant Activity of the Organic Extracts from the Stem of Bridelia stipularis

2019 ◽  
Vol 48 (5) ◽  
pp. 999-1009
Author(s):  
Samina Khan Yusufzai ◽  
Mohammad Shaheen Khan ◽  
Eunice Lua Hanry ◽  
Mohd. Rafatullah ◽  
Belsheera Binti Elison
Keyword(s):  
Antioxidant Activity ◽  
Chemical Constituents ◽  
Ms Analysis ◽  
Organic Extracts ◽  
In Vitro Antioxidant Activity

FTIR, GC-MS and HPLC analysis of Baliospermum montanum (Willd.) Muell. Arg.

2020 ◽  
Vol 11 (4) ◽  
pp. 5059-5066
Author(s):  
Sushma B K ◽  
Raveesha H R
Keyword(s):  
Acetic Acid ◽  
Quantitative Estimation ◽  
Chemical Constituents ◽  
Standard Procedure ◽  
Naphthalene Acetic Acid ◽  
Root Extract ◽  
Pentanoic Acid ◽  
Trimethylsilyl Ester ◽  
Isolation And Characterization ◽  
Ms Analysis

The present work is aimed to determine the chemical constituents in Baliospermum montanum methanolic extracts. An in vitro regenerated procedure was developed for the induction of callus from stem explant cultured on Murashige and Skoog (MS) medium fortified with various concentration and permutations of 2, 4-dichloro phenoxy acetic acid, 1-naphthalene acetic acid, 6-benzyl amino purine and gibberellic acid. FTIR & GC-MS analysis was done according to standard procedure. The quantitative estimation of β-sitosterol was done by HPLC method. Maximum fresh and dry weight of callus was estimated in the combination of GA3 (0.5 mg/L) + NAA (2 mg/L) compared to other concentration. The FTIR analysis showed various functional compounds with different characteristic peak values in the extracts. Major bioactive constituents were recognized in the GC-MS analysis. Root extract revealed the existence of 1-hexadecanol, pentanoic acid, 2-(aminooxy)- and 1-hexacosanol. Leaf extract showed the presence of propanoic acid, 2-oxo-, trimethylsilyl ester, 9,12-octadecadienoic acid (z,z)-, trimethylsilyl ester, docosane, 1,22-dibromo- and pentatriacontane. Stem and stem derived callus exhibit the presence of 1,6,3,4-dihydro-2-deoxy-beta-d-lyxo-hexopyranose, n-hexadecanoic acid and pentanoic acid, 2-(aminooxy). The methanolic extract of leaf exhibited 0.2149 % of β-sitosterol content. There were no peaks observed in the root, stem and stem derived callus. Further studies are necessary for the isolation and characterization of bioactive compounds from B. montanum.

GC-MS analysis and in vitro antibacterial potential of volatile chemical constituents from leaves of Murrayakoenigii L. Spreng

2017 ◽  
Vol VI (I) ◽  
pp. 143-147
Author(s):  
Itzaz Aslam ◽  
Faiza Aslam ◽  
Shahzad Qamar ◽  
Saiqa Ishtiaq ◽  
Muhammad Shaharyar Khan Afridi ◽  
...  
Keyword(s):  
Chemical Constituents ◽  
Ms Analysis ◽  
Antibacterial Potential
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