The powder of Amomum villosum fruits was purchased from Jinhuaken of Panlong Town, Yangchun City, Guangdong Province, China. The salesperson provided the sample information of Amomum villosum fruits powder. Xanthine (XA) and XO were purchased from Sigma-Aldrich Co. (St. Louis, MO, USA). Vanillic acid and Folin phenol were obtained from Aladdin Industrial Co. (Shanghai, China). Tween 80 used was from Tianjin Ruijinte Chemical Company Limited (Tianjin, China). N-octanol and Ethanol (95%) were purchased from Tianjin Hengxing Chemical Company Limited (Tianjin, China). All the ingredients were food grade.
Xanthine xa
Manufactured by Merck Group
Sourced in United States, Germany
Xanthine (XA) is a laboratory product provided by Merck Group. Xanthine is a purine derivative that serves as a substrate for various enzymatic reactions in research applications.
Automatically generated - may contain errors
2 protocols using xanthine xa
1
Amomum villosum Fruit Powder Evaluation
2
Quantitative Analysis of Purine and Pyrimidine Bases
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Purine (uric acid-UA, hypoxanthine-HY, xanthine-XA, adenine-AD, guanine-GUA, and guanosine-GU) and pyrimidine bases (cytosine-CS, uracil-UR, cytidine-CD, and tymine-TM) were all of 99% purity (except GU 98%) and purchased from Sigma-Aldrich, Germany. For the preparation of buffers and mobile phases 99.5-100.5% KH 2 PO 4 (Merck, Germany) and 98% K 2 HPO 4 (Kemika, Croatia), 99% acetic acid and sodium acetate (Sigma-Aldrich, Germany), HPLC grade methanol (MeOH, J.T. Baker, Holland), 27% NH 3 (Sigma-Aldrich, Germany), 99% NaOH (Merck, Germany), 37% hydrochloric acid and 84% phosphoric acid (Riedel-De Häen, Germany) were used. Calibration of glass electrode (6.0234.100, pH 0-14, Metrohm, Switzerland) was performed with standard aqueous buffer solutions (Kemika, Croatia) and Milli-Q purified water (resistivity >18 MΩcm) was used for the preparation of working standards and solutions throughout the work.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!