Catechin gallate

Manufactured by Yuanye Bio-Technology

Sourced in China

Catechin gallate is a type of polyphenol compound. It is a natural substance found in various plant species. Catechin gallate is used as a laboratory reagent for research and analytical purposes.

Automatically generated - may contain errors

Lab products found in correlation

Spelling variants of this product

Catechin (35 citations)

6 protocols using catechin gallate

Quantitative Analysis of Flavonoids

Check if the same lab product or an alternative is used in the 5 most similar protocols

LC-MS-grade methanol was purchased from Merck (Darmstadt, Germany). Formic acid was purchased from Fisher Scientific (LC-MS grade, Thermo Scientific, Carlsbad, CA, USA), and ammonium formate was obtained from Macklin (HPLC grade, purity: ≥99%). Sakuranetin was purchased from Sigma-Aldrich (Sigma-Aldrich, Inc., St. Louis, MO, USA, CAS number: 2957-21-3); quercitrin (CAS number: 522-12-3), myricitrin (CAS number: 17912-87-7), kaempferol (CAS number: 520-18-3), luteolin (CAS number: 491-70-3), rutin (CAS number: 153-18-4), hyperoside (CAS number: 482-36-0), kaempferol-3-O-rutinoside (CAS number: 17650-84-9), catechin (CAS number: 225937-10-0), and catechin gallate (CAS number: 130405-40-2) were purchased from Shanghai Yuanye Bio-Technology Co., Ltd. (Shanghai, China). Ultrapure water was purified using a Milli-Q system (18 MΩ*cm, Millipore, Burlington, MA, USA).

Zhou Z., Deng Z., Liang S., Zou X., Teng Y., Wang W, & Fu L. (2023). Quantitative Analysis of Flavonoids in Fruiting Bodies of Sanghuangporus Using Ultra-High-Performance Liquid Chromatography Coupled with Triple Quadrupole Mass Spectrometry. Molecules, 28(13), 5166.

+ Open protocol

+ Expand

Standardization of Tea Compound Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols

The references of non-volatile compounds (HPLC grade ≥ 98%) were purchased from Yuanye Bio-Technology Co., Ltd. (Shanghai, China), including catechins (catechin, epicatechin, catechin gallate, epicatechin gallate, gallocatechin, epigallocatechin, gallocatechin gallate and epigallocatechin-3-gallate), alkaloids (caffeine, theobromine and theophylline), flavonol glycosides (quercetin-3-O-glucoside, quercetin-3-O-galactoside, quercetin-3-O-rutinoside, quercetin-3-O-rhamnosyl-glucoside, myricetin-3-O-glucoside, myricetin-3-O-galactoside, myricetin-3-O-rhamnoside, kaempferol-3-O-glucoside, kaempferol-3-O-rutinoside, kaempferol-3-O-rhamnosyl-glucoside) and free amino acids (glutamic acid, aspartic acid, asparaginate, serine, glutamine, histidine, tryptophan, glycine, phenylalanine, arginine, theanine, alanine, γ-aminobutyric acid, tyrosine, threonine, valine, isoleucine, leucine and lysine). Acetonitrile and methanol were HPLC grade and were purchased from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). The ultra-pure water (>18 MΩ cm) was prepared by Milli-QTM reference system (Merck Millipore, Milford, MA, USA).

Fan F.Y., Zhou S.J., Qian H., Zong B.Z., Huang C.S., Zhu R.L., Guo H.W, & Gong S.Y. (2022). Effect of Yellowing Duration on the Chemical Profile of Yellow Tea and the Associations with Sensory Traits. Molecules, 27(3), 940.

+ Open protocol

+ Expand

Qingzhuan Tea's Bioactive Compounds

Check if the same lab product or an alternative is used in the 5 most similar protocols

Tea samples (Qingzhuan tea) were obtained from Huanghelou Tea Factory (Hubei, China); α-glucosidase (EC 3.2.1.20 Saccharomyces cerevisiae, G0660) and p-nitrophenyl-α-D-glucopyranoside (pNPG, N1377) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Catechins standards of (−)-epicatechin (EC), (+)-catechin (C), (−)-epigallocatechin (EGC), (−)-gallocatechin (GC), (−)-epicatechin gallate (ECG), (−)-catechin gallate (CG), (−)-epigallocatechin gallate (EGCG) and (−)-gallocatechin gallate (GCG) and gallic acid (GA) were purchased from Shanghai Yuanye Biological Technology Company Limited (Shanghai, China). Acarbose was acquired from the National Institute for the Control of Pharmaceutical and Biological Products (Beijing, China). All other reagents and solvents were purchased from China National Pharmaceutical Group Corporation (Beijing, China) and were of analytical grade. Purified water (18.2 MΩ) was prepared using a Millipore Mill-Q Ultrapure Water System (Billerica, MA, USA).

Liu S., Yu Z., Zhu H., Zhang W, & Chen Y. (2016). In vitro α-glucosidase inhibitory activity of isolated fractions from water extract of Qingzhuan dark tea. BMC Complementary and Alternative Medicine, 16, 378.

+ Open protocol

+ Expand

Comprehensive Tea Phytochemical Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols

Black tea, green tea and jasmine tea were from Eastsign Foods (Quzhou) Co., Ltd. (Quzhou, China). Purified water was from Hangzhou Wahaha Beverage Co., Ltd. (Hangzhou, Zhejiang, China), which had a total dissolved solids of 1.768 mg/L and a pH of 6.74.
Gallic acid (GA), gallo catechin (GC), epigallo catechin (EGC), catechin (C), epicatechin (EC), gallo catechin gallate (GCG), epigallo catechin gallate (EGCG), catechin gallate (CG), epicatechin gallate (ECG), theaflavin (TF), theaflavin-3-gallate (TF-3-G), theaflavin-3-gallate (TF-3-G) and theaflavin-3,3-digallate (TFDG) were from Shanghai Yuanye Biotechnology Co., Ltd. (China) with purity ≥95%. N-Alkanes for linear retention index (RI) determination and internal standard solution (decanoic acid ethyl ester) were from TCI (Shanghai) Development Co., Ltd. (Shanghai, China). Ninhydrin, stannous chloride, sodium carbonate, disodium hydrogen phosphate, potassium dihydrogen phosphate and disodium EDTA were all analytical grade from local suppliers. Acetic acid and acetonitrile were chromatographic grade, from local suppliers.

Jin J.C., Liang S., Qi S.X., Tang P., Chen J.X., Chen Q.S., Chen Y.F., Yin J.F, & Xu Y.Q. (2023). Widely targeted metabolomics reveals the effect of different raw materials and drying methods on the quality of instant tea. Frontiers in Nutrition, 10, 1236216.

+ Open protocol

+ Expand

Procurement of Flavonoid and Amino Acid Standards

Check if the same lab product or an alternative is used in the 5 most similar protocols

The following chemicals were purchased from Shanghai Yuanye Bio-Technology Co., Ltd. (Shanghai, China): catechin (C), epicatechin (EC), epi gallocatechin (EGC), gallocatechin (GC), gallocatechin gallate (GCG), epi gallocatechin gallate (EGCG), epicatechin gallate (ECG), catechin gallate (CG), theaflavin, theaflavin-3-gallate, theaflavin-3′-gallate, and theaflavin-3,3′-di-O-gallate. Flavonoids and glycosides standards were purchased from Shanghai Macklin Biochemical Technology Co., Ltd. (Shanghai, China), including rutin, quercetin, vitexin, myricetin, myricetin 3-O-galatoside, kaempferol-3-O-glucoside quercetin-3-O-glucoside, kaempferol-3-O-rutinoside, quercetin-3-O-glucosylrutinoside, proanthocyanidin B1, proanthocyanidin B2, proanthocyanidin B3, proanthocyanidin B4, β-glucogallin, and quinic acid. We also purchased a mixed amino acids standard from Sykam GmbH (Munich, Germany).

Zhou H., Liu Y., Wu Q., Zhang X., Wang H, & Lei P. (2024). The manufacturing process provides green teas with differentiated nonvolatile profiles and influences the deterioration of flavor during storage at room temperature. Food Chemistry: X, 22, 101371.

+ Open protocol

+ Expand

Longjing 43 Tea Polyphenol Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols

Fresh leaves of Longjing 43 tea plants were plucked according to the standard method of one bud and four leaves, and then immediately stored frozen at −20 °C. Edible defoamer for bean products was from a food additives company in Hebei Province, China. Green tea pieces (Longjing) were from Hangzhou Longguan Industrial Co., Ltd. (China). Tannase (5000 U/g) was from Heilongjiang Weinuoen Biotechnology Co., Ltd. (China). Gallic acid (GA), gallocatechin (GC), epigallo catechin (EGC), catechin (C), epicatechin (EC), gallocatechin gallate (GCG), epigallo catechin gallate (EGCG), catechin gallate (CG), epicatechin gallate (ECG), TF, theaflavin-3-gallate (TF-3-G), theaflavin-3′-gallate (TF-3′-G) and theaflavin-3–3′-digallate (TFDG) were from Shanghai YuanYe Biotechnology Co., Ltd. (China) with purity of ≥ 95%. Citric acid monohydrate, disodium hydrogen phosphate (analytical grade), acetonitrile, acetic acid, water (chromatography grade) and other chemicals were from local suppliers. Purified water was from Hangzhou Wahaha Beverage Co., Ltd. (China).

Liang S., Wang F., Chen J., Granato D., Li L., Yin J.F, & Xu Y.Q. (2022). Optimization of a tannase-assisted process for obtaining teas rich in theaflavins from Camelia sinensis leaves. Food Chemistry: X, 13, 100203.

+ Open protocol

+ Expand

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?

Revolutionizing how scientists
search and build protocols!