Article
Biochemistry & Molecular Biology
Thais Silva da Rocha, Alessandro de Lima, Jurandy do Nascimento Silva, Geni Rodrigues Sampaio, Rosana Aparecida Manolio Soares Freitas, Renan Danielski, Adriano Costa de Camargo, Fereidoon Shahidi, Elizabeth Aparecida Ferraz da Silva Torres
Summary: Jua, an underexplored fruit from Brazil, is rich in antioxidant substances. This study found that ultrasound-assisted extraction with water as the solvent resulted in the highest total phenolic content and antiradical activity. The extracted pulp from Jua contains ellagic acid, which exhibits higher antioxidant activity compared to other well-known fruits. This study provides new information about the potential use of Jua as a source of phenolic compounds.
Article
Biotechnology & Applied Microbiology
Thangsei Nengneilhing Baite, Bishnupada Mandal, Mihir Kumar Purkait
Summary: In this study, gallic acid was efficiently extracted from Ficus auriculata leaves using ultrasound assisted extraction. The optimal conditions included using 50% methanol as the solvent, sonication bath for extraction, and 30 minutes at 50 degrees C. This water-based extraction method provides a valuable alternative to traditional organic solvent extraction methods.
FOOD AND BIOPRODUCTS PROCESSING
(2021)
Article
Acoustics
Daniel Santos, Vitoria Hagemann Cauduro, Wilian Wohlmann, Cezar A. Bizzi, Paola A. Mello, Erico M. M. Flores
Summary: Ultrasound was successfully used in this study to convert tannic acid into gallic acid using diluted H2O2 as reagent, with a high production yield of 128 mg/g of initial tannic acid. Reaction conditions included a 30-minute reaction time, 1 mol L-1 H2O2 concentration, 50% ultrasound amplitude, and 90 degrees C temperature.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xana Alvarez, Angeles Cancela, Yolanda Merchan, Angel Sanchez
Summary: A study was conducted on the leaves of six Eucalyptus species using different extraction methods and investigating the impact of solvent polarity on extraction yields. The results demonstrated the significant potential of E. nitens in terms of compound content, with substantially higher yields compared to other species.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Zafar Hayat, Tuba Riaz, Kinza Saleem, Kashif Akram, Hafeez Ur Rehman, Muhammad Azam
Summary: Different types of agro-waste, including mango waste, can be utilized as potential substrates for extracting bioactive compounds. In this study, the efficacy of ultrasound-assisted extraction (UAE) in obtaining gallic acid from mango seed kernels was investigated. The optimized UAE method demonstrated effective extraction of phenolic compounds, indicating the potential of mango seed kernels as a suitable source for extracting phenolics in food and nutraceutical applications.
Article
Plant Sciences
Martina Jakovljevic Kovac, Stela Jokic, Igor Jerkovic, Maja Molnar
Summary: This study extracted gallic acid, ellagic acid, and hydrolyzable tannins (HT) from Alchemilla vulgaris L. plant using different deep eutectic solvents (DESs). Choline chloride:urea (1:2) was found to be the most suitable solvent. Extraction by stirring and heating was the most effective method for obtaining the highest amounts of gallic acid, ellagic acid, and HT.
Article
Biotechnology & Applied Microbiology
Alexandra Cristina Blaga, Elena Niculina Dragoi, Raluca Elena Munteanu, Dan Cascaval, Anca Irina Galaction
Summary: This study investigated the reactive extraction process of gallic acid using dichloromethane as the solvent, Amberlite LA-2 as the amine extractant, and 1-octanol as the phase-modifier. The separation yield and distribution coefficient were discussed, along with the analysis of extraction conditions and mechanism. Optimal conditions were determined and statistical regression and artificial neural networks were used for modeling and optimization.
FERMENTATION-BASEL
(2022)
Article
Chemistry, Analytical
Huda M. Younis, A. O. Youssef, Said M. El-Sheikh, Sheta M. Sheta, Mohamed S. Attia
Summary: Fe-Gallic acid metal organic framework (MOF) was synthesized and characterized for use as a sensor to detect the antiviral drug Molnupiravir. The Fe-Gallic acid MOF sensor is highly sensitive and cost-effective, and does not require special equipment. It has potential applications in various settings, including clinical laboratories and point-of-care.
MICROCHEMICAL JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Martin Almendinger, Franziska Saalfrank, Sascha Rohn, Elke Kurth, Monika Springer, Daniel Pleissner
Summary: Microalgae and cyanobacteria are rich sources of high-value pigments and phenolic compounds with antioxidant capacity, which can be utilized in food, cosmetics, and pharmaceutical industries. Different species of microalgae and cyanobacteria were analyzed for their antioxidant capacity, revealing variations in the content of phenolic compounds and water-soluble/lipid-soluble compounds. Pre-treatment methods such as cell disruption were shown to double the yields of antioxidant compounds, emphasizing the importance of effective extraction methods.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Review
Biochemistry & Molecular Biology
Dorota Wianowska, Malgorzata Olszowy-Tomczyk
Summary: Nature provides valuable anti-oxidants, such as gallic acid, which has been used for its healing properties since ancient times. Due to its beneficial properties, gallic acid has become essential in various industries, serving as a protection against UV radiation, an astringent in cosmetics, and a preservative in food products. This review updates the knowledge about gallic acid's biological activities and methods used for its isolation and determination.
Article
Biotechnology & Applied Microbiology
Ye-Seul Park, Vikash Chandra Roy, Jin-Seok Park, Ji-Min Han, Yu-Na Shin, Ye-Ryeon Shin, Sin-Won Park, Byung-Soo Chun
Summary: Bioactive compounds were extracted from the brown seaweed Ecklonia stolonifera using subcritical water hydrolysis, which is a green extraction technique. The release of active compounds such as sugars, phenolics, flavonoids, and antioxidants was influenced by reaction temperature, with an optimum extraction temperature of 195°C. Six different phenolic compounds were identified, with gallic acid being the most abundant. The hydrolysates obtained exhibited strong antioxidant and antimicrobial activities. This study provides valuable insights for the further utilization of brown seaweeds in applications with potential benefits for humans.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Engineering, Chemical
Liuyang Xu, Xin Zhou, Gaoliang Wang, Lu Zhou, Xianke Sun
Summary: This study investigated the degradation of Acid Red B in the system of ultrasound/peroxymonosulfate/Fe3O4 through orthogonal and single factor experiments. Various factors and reagents were added to study the degradation effect, and UV-visible spectrophotometer was used to analyze the degradation path of acid red B in the system. The proposed method shows great potential application value in removal of organic pollution and environmental purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Soo-Ah Jin, Tero Kamarainen, Patrick Rinke, Orlando J. Rojas, Milica Todorovic
Summary: In this study, machine learning was used to design particles of oxidized tannic acid (OTA) and correlate their size and shape with colloidal suspension conditions. The results showed that a small number of experiments were sufficient to build predictive models of OTA morphology, and multiple property landscapes were generated to infer solutions that met multiple design objectives.
Article
Chemistry, Multidisciplinary
Peany Houng, Yuya Murakami, Yusuke Shimoyama
Summary: Micro-mixing techniques including swirl-mixing were utilized for supercritical CO2 extraction of ferulic acid and gallic acid. The study demonstrates the effectiveness of swirl-mixing in achieving high extraction efficiency for highly polar compounds from aqueous solutions.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Biochemistry & Molecular Biology
Shohreh Jafarinejad, William H. C. Martin, Bayan Abu Ras, Mohammad Isreb, Badie Jacob, Abid Aziz, Zahra Adoul, Ruby Lagnado, Richard D. Bowen, Mojgan Najafzadeh
Summary: The compound TMBS shows a stronger anticancer effect compared to GA, suppressing the growth and proliferation of lung cancer cells. Furthermore, TMBS does not show cytotoxicity to healthy cells, suggesting its potential for cancer therapeutics.
