2002
DOI: 10.1590/s1519-69842002000400004
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Aerobic and anaerobic degradation of tannic acid on water samples from Monjolinho reservoir (São Paulo, SP, Brazil)

Abstract: In order to describe the transformations of tannic acid during its degradation (under aerobic and anaerobic conditions) incubations were performed. To evaluate the oxygen consumption, the tannic acid was added to 1 L of water sample from Monjolinho's reservoir (22º00'S and 47º54'W); these solutions were aerated and the dissolved oxygen was monitored for 16 days, the anaerobic process was avoided. For the anaerobic and aerobic degradation, the dissolved organic carbon and the acid tannic concentrations were est… Show more

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Cited by 10 publications
(4 citation statements)
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“…The presence of COD is directly proportional to the presence of tannins in K. alvarezii. Santino et al (2002) stated that COD results in the biodegradability potential of aquatic microbiota. The adaptation of these organisms is for aerobic or anaerobic immobilization, and therefore tannin mineralization will also affect the concentration of these compounds in the environment.…”
Section: Resultsmentioning
confidence: 99%
“…The presence of COD is directly proportional to the presence of tannins in K. alvarezii. Santino et al (2002) stated that COD results in the biodegradability potential of aquatic microbiota. The adaptation of these organisms is for aerobic or anaerobic immobilization, and therefore tannin mineralization will also affect the concentration of these compounds in the environment.…”
Section: Resultsmentioning
confidence: 99%
“…The FT IR spectrum of tannic acid is presented in Fig 3 . The broad band in the region of 3300-3500 cm -1 is the characteristic of inter molecular hydrogen bonded -OH groups of tannic acid. Strong and intense band at 1721 cm -1 is attributed to the stretching vibration of carbonyl group, characteristic of organic acids [27]. The bands at 1447 and 1368 cm -1 are attributed to aliphatic C-H stretching and bending vibrations of CH 2 groups of tannic acid [28].…”
Section: 2: Tannic Acid Degradation By Various Processesmentioning
confidence: 98%
“…The ester and depside bonds of hydrolysable tannins are broken down by enzyme tannase (tanninacyl hydrolase) to give product gallic acid and glucose [6]. The gallic acid monomers are utilised as substrates by oxidative breakdown to simple aliphatic acids, which then enter the citric acid cycle.…”
Section: Mechanism Of Actionmentioning
confidence: 99%
“…In addition to that fungal strains are difficult to manipulate genetically because of their complexity. Tannase produced by bacteria can degrade tannic acid and also natural tannins like chestnut, tara, oak and myrobalan tannins [6][7][8][9]. Although a number of tannin-degrading micro-organisms which are potential sources of tannase have been reported [10], the search continues for organisms which are more prolific degraders of tannins and better sources of tannase.…”
Section: Tannasementioning
confidence: 99%