4.7 Article

Antimicrobial Activity of Gallotannins Isolated from Mango (Mangifera indica L.) Kernels

期刊

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 57, 期 17, 页码 7712-7718

出版社

AMER CHEMICAL SOC
DOI: 10.1021/jf901621m

关键词

Mango (Mangifera indica L.) kernel; gallotannins; HPLC; mass spectrometry; antimicrobial activity

资金

  1. HRH Carl Herzog von Wurttemberg
  2. Deutscher Akademischer Auslandsdienst (DAAD)
  3. Research Chairs of Canada

向作者/读者索取更多资源

Gallotannins were extracted from mango (Mangifera indica L.) kernels with aqueous acetone (80%, v/v) and purified using liquid-liquid extraction and two-step low-pressure liquid chromatography (LPLC) on Sephadex LH-20. Analytical high-performance liquid chromatography and mass spectrometry confirmed the presence of hydrolyzable tannins with a degree of galloylation ranging from 4 to 9 and additionally revealed the presence of deca-, undeca-, and dodeca-O-galloylglucose. Further purification using two-step semipreparative HPLC resulted in three pure hydrolyzable tannins, penta-, hexa-, and hepta-O-galloylglucose, with antibacterial activity, as evidenced from the agar spot and critical dilution assays. Although the growth of lactic acid bacteria was not inhibited, the proliferation of Gram-positive food spoilage bacteria was prevented and the growth of Gram-negative Escherichia coli was reduced. Because bacterial growth could be restored by the addition of iron to the medium, this study strongly supports the view that the inhibitory effects of hydrolyzable tannins are due to their iron-complexing properties.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Biochemistry & Molecular Biology

Effects of flavonoids on membrane adaptation of food-associated bacteria

Maria Linden, Alexander Flegler, Michelle M. Feuereisen, Fabian Weber, Andre Lipski, Andreas Schieber

Summary: The effects of naringenin, amentoflavone, and tetrahydroamentoflavone on bacterial lipids and membrane fluidity were investigated. Flavonoids caused an envelope stress response in microorganisms, while adaptive mechanisms using carotenoids, fatty acids, and menaquinones were employed. Naringenin significantly impacted carotenoids, fatty acids, menaquinones, and membrane fluidity, while amentoflavone and tetrahydroamentoflavone had specific effects on the studied strains' membranes and carotenoids. This study provides valuable insights into the response of food-associated microorganisms to these compounds, which is important for their safe application as natural preservatives.

BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES (2023)

Article Food Science & Technology

Dynamics of high hydrostatic pressure resistance development in RpoS-deficient Escherichia coli

Elisa Gayan, Zhiying Wang, Maika Salvador, Michael G. Ganzle, Abram Aertsen

Summary: High hydrostatic pressure (HHP) treatment is widely used in non-thermal food processing, but the development of resistance in bacteria may jeopardize the safety and stability of HHP-treated foods. This study investigated the routes and mechanisms through which HHP resistance develops in foodborne bacteria. The results showed that mutations in cAMP/CRP activity and TnaA variants can emerge in E. coli populations with reduced RpoS, and these mutants can compete with each other due to their differential HHP resistance and growth rates. Additionally, other independent routes of HHP resistance development were identified based on the downregulation of YegW or RppH activity.

FOOD RESEARCH INTERNATIONAL (2023)

Article Agriculture, Multidisciplinary

Conversion of Phenolic Acids in Canola Fermentation: Impact on Antimicrobial Activity against Salmonella enterica and Campylobacter jejuni

Vi D. Pham, Douglas R. Korver, Michael G. Ganzle

Summary: Canola meal is commonly used in poultry feeds. Fermentation with lactobacilli can alter the phenolic composition of canola meal and increase its antimicrobial activity against pathogens.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2023)

Article Biotechnology & Applied Microbiology

Characterization of GshAB of Tetragenococcus halophilus: a two-domain glutathione synthetase

Jieting Lin, Jin Xie, Lixin Luo, Michael Ganzle

Summary: The study characterized GshAB from Tetragenococcus halophilus, which serves as part of the oxidative stress response. GshAB showed optimal activity at pH 8.0 and 25 degrees C, and exhibited high specificity for Cys as the acceptor.

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY (2023)

Article Biology

A phylogenomic analysis of Limosilactobacillus reuteri reveals ancient and stable evolutionary relationships with rodents and birds and zoonotic transmission to humans

Fuyong Li, Xudong Li, Christopher C. Cheng, Dalimil Bujdos, Stephanie Tollenaar, David J. Simpson, Guergana Tasseva, Maria Elisa Perez-Munoz, Steven Frese, Michael G. Ganzle, Jens Walter, Jinshui Zheng

Summary: This study investigates the evolutionary relationship between different strains of Limosilactobacillus reuteri and their vertebrate hosts. It finds that there is a stable and long-term relationship between certain strains of L. reuteri and rodents and birds, while their relationship with other host species is more dynamic and transient. These findings contribute to our understanding of the role of gut microbes in hosts and have implications for microbial-based therapeutics.

BMC BIOLOGY (2023)

Article Biotechnology & Applied Microbiology

Conversion of hydroxycinnamic acids by Furfurilactobacillus milii in sorghum fermentations: Impact on profile of phenolic compounds in sorghum and on ecological fitness of Ff. milii.

Gautam Gaur, Sandra Damm, Maike Passon, Hiu Kwan Lo, Andreas Schieber, Michael G. Gaenzle

Summary: The conversion of phenolic compounds by lactobacilli in food fermentations contributes to food quality. However, specific enzymes involved in this process remain poorly understood. This study aimed to address this gap by disrupting genes coding for certain enzymes in Furfurilactobacillus milii FUA3583 and studying their contribution in sorghum fermentations. The results showed that Par1 played a major role in converting hydroxycinnamic acids, while mutants lacking par1 produced vinylphenols. Pad was responsible for the formation of pyrano-3-deoxyanthocyanidins, and disruption of this gene abolished their formation. The study suggests that understanding the functionality of these genes can help improve the quality of fermented cereal products.

FOOD MICROBIOLOGY (2023)

Article Biotechnology & Applied Microbiology

Composition and activity of antifungal lipopeptides produced by Bacillus spp. in daqu fermentation

Zhen Li, Kleinberg X. Fernandez, John C. Vederas, Michael G. Ganzle

Summary: This study aims to investigate the interaction between Bacillus species and fungi in daqu models. It was found that B. velezensis FUA2155 displayed strong antifungal activity in the daqu model and was the only strain that produced multiple iturin A congeners in situ.

FOOD MICROBIOLOGY (2023)

Article Food Science & Technology

Identification of peptides from camel milk that inhibit starch digestion

Rami M. Althnaibat, Heather L. Bruce, Michael G. Ganzle

Summary: The inhibition of starch digestion activities by peptides derived from camel milk proteins was investigated. The charge and hydrophobicity of the peptides were found to have an effect on their inhibitory activity. Peptides derived from whey proteins showed higher inhibition than those from casein. Peptide fractions enriched with positively charged peptides containing hydrophobic amino acids displayed the strongest inhibition of starch digestion, with a rate of 33-36%.

INTERNATIONAL DAIRY JOURNAL (2023)

Article Biochemistry & Molecular Biology

Characterization of the Glucan-Branching Enzyme GlgB Gene from Swine Intestinal Bacteria

Yuqi Shao, Weilan Wang, Ying Hu, Michael G. Ganzle

Summary: This study aimed to characterize GlgB enzyme cloned from a swine intestinal metagenome and investigate its role in the formation of alpha-(1 -> 4,6)-branched alpha-glucans from starch. The results showed that GlgB reduced the amylose content of different starches and amylose, indicating its potential role in starch degradation in the large intestine. The study also demonstrated that GlgB affected starch digestibility and could be used to produce food products with reduced digestibility and improved quality.

MOLECULES (2023)

Article Food Science & Technology

When microbiology meets chemistry: generation, properties and prospects of pyranoanthocyanins as natural food colorants

Fabian Weber, Andreas Schieber

Summary: Pyranoanthocyanins, formed by the reaction of anthocyanins and low-molecular compounds, have the potential to replace synthetic food additives as natural food colorants. However, their industrial-scale application is hindered by long reaction periods and low quantities obtained. Biotechnological approaches, such as accelerated generation of educts and genetic engineering, can overcome these challenges. Understanding the behavior of pyranoanthocyanins in different food matrices, particularly their stability during processing and storage, is crucial for their successful application.

CURRENT OPINION IN FOOD SCIENCE (2023)

Article Food Science & Technology

Use of reconstituted kefir consortia to determine the impact of microbial composition on kefir metabolite profiles

Benjamin C. T. Bourrie, Natalie Diether, Ryan P. Dias, Seo Lin Nam, A. Paulina de la Mata, Andrew J. Forgie, Gautam Gaur, James J. Harynuk, Michael Ganzle, Paul D. Cotter, Benjamin P. Willing

Summary: Kefir fermentation using kefir grains and commercial fermentation with planktonic cultures produce kefir with different metabolite compositions. The presence of lactobacilli in the fermentation greatly impacts the production of organic acids, while the absence of yeast has minimal effect. This study highlights the importance of microbial composition in kefir fermentation.

FOOD RESEARCH INTERNATIONAL (2023)

Article Food Science & Technology

Grape-derived pectic polysaccharides alter the tannin and pigment composition of Cabernet Sauvignon red wines

Ingrid Weilack, Lea Mehren, Andreas Schieber, Fabian Weber

Summary: The composition of pectic polysaccharides in Cabernet Sauvignon wines and their impact on the polyphenolic composition were studied. The results showed that pectic polysaccharides enhanced the absorbance of anthocyanins and increased their self-association, but also led to color instability and increased astringency.

CURRENT RESEARCH IN FOOD SCIENCE (2023)

Article Chemistry, Applied

Cruciferin improves stress resistance and simulated gastrointestinal survival of probiotic Limosilactobacillus reuteri in the model encapsulation system

Ali Akbari, Michael G. Ganzle, Jianping Wu

Summary: Encapsulation using cruciferin/alginate capsules can improve the stability and survival of probiotics during processing, storage, and gastrointestinal transit. The capsules protect the probiotics against harsh conditions and enhance their resistance to heat, low pH, and enzymes. The encapsulated probiotics also have a longer shelf life compared to unencapsulated ones.

FOOD HYDROCOLLOIDS FOR HEALTH (2023)

Article Agriculture, Multidisciplinary

Fabrication of dry S/O/W microcapsule and its probiotic protection against different stresses

Qianwan Guo, Bo Cui, Chao Yuan, Li Guo, Zhao Li, Qingqing Chai, Na Wang, Michael Ganzle, Meng Zhao

Summary: Microcapsules with S/O/W emulsion structure were successfully prepared to enhance the resistance of probiotics to harsh conditions, while reducing the harmful effects of antioxidants on probiotics. The dry S/O/W microcapsules significantly protected probiotics and could be used in the encapsulation of other bioactive ingredients.

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE (2023)

暂无数据