Anthocyanin copigmentation and color attributes of bog bilberry syrup wine during bottle aging: Effect of tannic acid and gallic acid extracted from Chinese gallnut

2019 ◽  
Vol 43 (8) ◽  
Author(s):  
Shuxun Liu ◽  
Siyu Li ◽  
Guo Lin ◽  
Niko Markkinen ◽  
Hangyu Yang ◽  
...  
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Aging Effect ◽  
Bottle Aging ◽  
Bog Bilberry

scholarly journals Antioxidant Network Based on Sulfonated Polyhydroxyalkanoate and Tannic Acid Derivative

2021 ◽  
Vol 8 (1) ◽  
pp. 9
Author(s):  
Laura Brelle ◽  
Estelle Renard ◽  
Valerie Langlois
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Water Soluble ◽  
Gel Formation ◽  
Ene Reaction ◽  
Inorganic Cations ◽  
Medium Chain Length ◽  
Physically Crosslinked ◽  
The Stability ◽  
Derivatives Of

A novel generation of gels based on medium chain length poly(3-hydroxyalkanoate)s, mcl-PHAs, were developed by using ionic interactions. First, water soluble mcl-PHAs containing sulfonate groups were obtained by thiol-ene reaction in the presence of sodium-3-mercapto-1-ethanesulfonate. Anionic PHAs were physically crosslinked by divalent inorganic cations Ca2+, Ba2+, Mg2+ or by ammonium derivatives of gallic acid GA-N(CH3)3+ or tannic acid TA-N(CH3)3+. The ammonium derivatives were designed through the chemical modification of gallic acid GA or tannic acid TA with glycidyl trimethyl ammonium chloride (GTMA). The results clearly demonstrated that the formation of the networks depends on the nature of the cations. A low viscoelastic network having an elastic around 40 Pa is formed in the presence of Ca2+. Although the gel formation is not possible in the presence of GA-N(CH3)3+, the mechanical properties increased in the presence of TA-N(CH3)3+ with an elastic modulus G’ around 4200 Pa. The PHOSO3−/TA-N(CH3)3+ gels having antioxidant activity, due to the presence of tannic acid, remained stable for at least 5 months. Thus, the stability of these novel networks based on PHA encourage their use in the development of active biomaterials.

scholarly journals Effect of tannic and gallic acids alone or in combination with carbenicillin or tetracycline on Chromobacterium violaceum CV026 growth, motility, and biofilm formation

2015 ◽  
Vol 61 (7) ◽  
pp. 487-494 ◽  
Author(s):  
Devendra H. Dusane ◽  
Che O’May ◽  
Nathalie Tufenkji
Keyword(s):  
Antibacterial Activity ◽  
Gallic Acid ◽  
Tannic Acid ◽  
Bacterial Growth ◽  
Biofilm Formation ◽  
Opportunistic Pathogen ◽  
Chromobacterium Violaceum ◽  
Minimum Inhibitory Concentrations

Chromobacterium violaceum is an opportunistic pathogen that causes infections that are difficult to treat. The goal of this research was to evaluate the effect of selected tannins (tannic acid (TA) and gallic acid (GA)) on bacterial growth, motility, antibiotic (carbenicillin, tetracycline) susceptibility, and biofilm formation. Both tannins, particularly TA, impaired bacterial growth levels and swimming motilities at sub-minimum inhibitory concentrations (sub-MICs). In combination with tannins, antibiotics showed increased MICs, suggesting that tannins interfered with antibacterial activity. Sub-MICs of tetracycline or TA alone enhanced biofilm formation of C. violaceum; however, in combination, these compounds inhibited biofilm formation. In contrast, carbenicillin at sub-MICs was effective in inhibiting C. violaceum biofilm formation; however, in combination with lower concentrations of TA or GA, biofilms were enhanced. These results provide insights into the effects of tannins on C. violaceum growth and their varying interaction with antibiotics used to target C. violaceum infections.

New insights into the protogenic and spectroscopic properties of commercial tannic acid: the role of gallic acid impurities

2018 ◽  
Vol 42 (10) ◽  
pp. 7703-7712 ◽  
Author(s):  
G. Ghigo ◽  
S. Berto ◽  
M. Minella ◽  
D. Vione ◽  
E. Alladio ◽  
...  
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Spectroscopic Properties ◽  
Spectral Features

Assessment of a protonation model for tannic acid and characterization of the spectral features of its protonated and dissociated species.

scholarly journals Characterization of a Robust and pH-Stable Tannase from Mangrove-Derived Yeast Rhodosporidium diobovatum Q95

Marine Drugs ◽  
2020 ◽  
Vol 18 (11) ◽  
pp. 546
Author(s):  
Jie Pan ◽  
Ni-Na Wang ◽  
Xue-Jing Yin ◽  
Xiao-Ling Liang ◽  
Zhi-Peng Wang
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Specific Activity ◽  
Maximum Activity ◽  
Sds Page ◽  
Rhodosporidium Diobovatum ◽  
Bacteria And Fungi ◽  
Ph Range ◽  
First Time

Tannase plays a crucial role in many fields, such as the pharmaceutical industry, beverage processing, and brewing. Although many tannases derived from bacteria and fungi have been thoroughly studied, those with good pH stabilities are still less reported. In this work, a mangrove-derived yeast strain Rhodosporidium diobovatum Q95, capable of efficiently degrading tannin, was screened to induce tannase, which exhibited an activity of up to 26.4 U/mL after 48 h cultivation in the presence of 15 g/L tannic acid. The tannase coding gene TANRD was cloned and expressed in Yarrowia lipolytica. The activity of recombinant tannase (named TanRd) was as high as 27.3 U/mL. TanRd was purified by chromatography and analysed by SDS-PAGE, showing a molecular weight of 75.1 kDa. The specific activity of TanRd towards tannic acid was 676.4 U/mg. Its highest activity was obtained at 40 °C, with more than 70% of the activity observed at 25–60 °C. Furthermore, it possessed at least 60% of the activity in a broad pH range of 2.5–6.5. Notably, TanRd was excellently stable at a pH range from 3.0 to 8.0; over 65% of its maximum activity remained after incubation. Besides, the broad substrate specificity of TanRd to esters of gallic acid has attracted wide attention. In view of the above, tannase resources were developed from mangrove-derived yeasts for the first time in this study. This tannase can become a promising material in tannin biodegradation and gallic acid production.

scholarly journals Characterization of Sporidiobolus ruineniae A45.2 Cultivated in Tannin Substrate for Use as a Potential Multifunctional Probiotic Yeast in Aquaculture

2020 ◽  
Vol 6 (4) ◽  
pp. 378
Author(s):  
Apinun Kanpiengjai ◽  
Chartchai Khanongnuch ◽  
Saisamorn Lumyong ◽  
Aksarakorn Kummasook ◽  
Suwapat Kittibunchakul
Keyword(s):  
Staphylococcus Aureus ◽  
Antioxidant Activity ◽  
Gallic Acid ◽  
Tannic Acid ◽  
Feed Additive ◽  
Intact Cells ◽  
Produce Cell ◽  
Viable Cells ◽  
Probiotic Yeast ◽  
Acid Substrate

At present, few yeast species have been evaluated for their beneficial capabilities as probiotics. Sporidiobolus ruineniae A45.2, a carotenoid-producing yeast, was able to co-produce cell-associated tannase (CAT), gallic acid and viable cells with antioxidant activity when grown in a tannic acid substrate. The aim of this research study was to identify the potential uses of S. ruineniae A45.2 obtained from a co-production system as a potential feed additive for aquaculture. S. ruineniae A45.2 and its CAT displayed high tolerance in pH 2.0, pepsin, bile salts and pancreatin. Furthermore, its viable cells were characterized by moderate hydrophobicity, high auto-aggregation and moderate co-aggregation with Staphylococcus aureus, Salmonella ser. Thyphimurium and Streptococcus agalactiae. These attributes promoted S. ruineniae A45.2 as a multifunctional probiotic yeast. In addition, the intact cells possessed antioxidant activities in a 100–150 μg gallic acid equivalent (GAE)/mL culture. Remarkably, the fermentation broth demonstrated higher antioxidant activity of 9.2 ± 1.8, 9.0 ± 0.9, and 9.8 ± 0.7 mg GAE/mL culture after FRAP, DPPH and ABTS assays, respectively. Furthermore, higher antimicrobial activity was observed against Bacillus cereus, Staphylococcus aureus and Strep. agalactiae. Therefore, cultivation of S. ruineniae A45.2 with a tannic acid substrate displayed significant potential as an effective multifunctional feed additive.

In vitro studies on the interactions of blood lipid level‐related biological molecules with gallic acid and tannic acid

2019 ◽  
Vol 99 (15) ◽  
pp. 6882-6892 ◽  
Author(s):  
Xiangquan Zeng ◽  
Zhongting Sheng ◽  
Xiangxin Li ◽  
Xinguang Fan ◽  
Weibo Jiang
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Lipid Level ◽  
Blood Lipid ◽  
In Vitro Studies ◽  
Biological Molecules ◽  
Blood Lipid Level

scholarly journals Effects of Hydrolyzable Tannins on In Vitro Growth of Armillaria calvescens and A. gallica

Plant Disease ◽  
2011 ◽  
Vol 95 (10) ◽  
pp. 1255-1262 ◽  
Author(s):  
Nicholas J. Brazee ◽  
Robert L. Wick ◽  
Phillip M. Wargo
Keyword(s):  
Gallic Acid ◽  
Tannic Acid ◽  
Root Bark ◽  
In Vitro Growth ◽  
Hydrolyzable Tannins ◽  
Armillaria Gallica ◽  
Available Carbon ◽  
Black Oak ◽  
Colony Area

We hypothesized that Armillaria gallica, which is abundant in oak-dominated forests, is more successful at oxidizing and metabolizing polyphenols than A. calvescens, which is mostly restricted to maple-dominated forests. Isolates were challenged with up to seven concentrations of tannic acid (TA), gallic acid (GA), and black oak root bark extracts (RBE). Six concentrations of glucose and ethanol were also tested to determine the influence of available carbon on growth. Colony area and biomass values were analyzed using a GLM and Tukey's HSD test. When challenged with 0.12% concentrations of TA, GA, and RBE, A. gallica produced a significantly larger biomass in all treatments and larger colony areas in four of the five treatments compared to control values. A. gallica also produced a significantly larger number of rhizomorphs than A. calvescens on RBE medium. In contrast, A. calvescens generated significantly larger biomass over control treatments only when RBE was added, and values were substantially less compared to A. gallica. Growth of both species was significantly greater when ethanol was added, especially on GA medium, while glucose had little effect. Results from this study suggest that A. gallica is better at oxidizing and metabolizing polyphenols than A. calvescens.

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