3,4-Dihydroxybenzoic acid

Examples of using this product（for reference only）

HPLC

HPLC analysis was performed using HPLC equipped with a C18 250 mm × 4.6 mm, 5 μm column . The analysis was maintained at a column temperature of 30℃with an injection volume of 10 μL at a flow rate of 1.0 mL/min. The mobile phase A was methanol and mobile phase B was ultrapure water containing 0.1% (m/v) formic acid. The gradient elution was performed as follows: 0–5 min, B 95–90%, 5–30 min, B 90–80%, 30–45 min, B 80–76%, 45–60 min, B 76–61%, 60–70 min, B 61–57%, 70–80 min, B 57–53%, 80–85 min, B 53–95%, 85–5 min, B 95%. The separated phenolic components were monitored at a wavelength of 280 nm.

References：

Zhang X, Li Y, Li Y, Zhao J, Cheng Y, Wang Y, Guan J. Changes of Bioactive Components and Antioxidant Capacity of Pear Ferment in Simulated Gastrointestinal Digestion In Vitro. Foods. 2023 Mar 13;12(6):1211. doi: 10.3390/foods12061211. PMID: 36981138; PMCID: PMC10048753.

HPLC

HPLC analysis employed an Agilent 1260 HPLC instrument and a diode array detector (Agilent, Santa Clara, CA, USA). The chromatographic separation was achieved by a Zobax Stablebond Analytical SB-C18 column (250 × 4.6 mm, 5 μm). The mobile phases, containing a gradient of solvent A (acetic/water, 2:98, v/v) and solvent B (acetic acid/acetonitrile/water, 5:50:45, v/v) were used to elute the column. The solvent gradient was programmed from 90% to 55%A and 10% to 45%B for 50 min, 55% to 0%A and 45% to 100%B for 10 min, and 0% to 90%A and 100% to 10%B for 5 min. The flow velocity was 1.0 mL·min-1 , the column temperature was 30℃, and the injection volume was 20 μL

References：

Liang D, Deng H, Deng Q, Lin L, Lv X, Wang J, Wang Z, Xiong B, Zhao X, Xia H. Dynamic Changes of Phenolic Compounds and Their Associated Gene Expression Profiles Occurring during Fruit Development and Ripening of the Donghong Kiwifruit. J Agric Food Chem. 2020 Oct 14;68(41):11421-11433. doi: 10.1021/acs.jafc.0c04438. Epub 2020 Sep 30. PMID: 32936614.

Remark：These protocols are for reference only. Solarbio does not independently validate these methods.

Note：

1. The products are all for scientific research use only. Do not use it for medical, clinical diagnosis or treatment, food and cosmetics, etc. Do not store them in ordinary residential areas.

2. For your safety and health, please wear laboratory clothes, disposable gloves and masks.

3. The experimental results may be affected by many factors, after-sale service is limited to the product itself and does not involve other compensation.