Lactic acid bacterial exopolysaccharides strongly bind histamine and can potentially be used to remove histamine contamination in food.

The symptoms of foodborne histamine poisoning are similar to those of IgE-mediated food allergies. In this study, we investigated the histamine-binding capacity of lactic acid bacteria (LAB) strains as potential preventive agents against histamine poisoning. Histamine biosorption capacity was determined for 16 LAB strains.

Functions of small RNAs in Lactobacillus casei-Pediococcus group of lactic acid bacteria using fragment analysis.

Small RNAs (sRNA) are non-cording RNAs composed of 50∼400 nt responsible for coordinating the adaption of Escherichia coli and other bacteria to changing environmental conditions, including pH and temperature. However, the role of sRNAs in lactic acid bacteria (LAB) has not yet been clarified. In this study, we used the Lactobacillus casei-Pediococcus group to evaluate the function of sRNAs in LAB, using RNA sequencing in the exponential growth phase and stationary phase to map and analyze sRNA fragments, which were categorized as Pediococcus pentosaceus and Lactobacillus paracasei.

Protection of human intestinal epithelial cells from oxidative stress caused by mercury using lactic acid bacteria.

Heavy metals are harmful to human health. Therefore, we investigated the biosorption of heavy metals by lactic acid bacteria (LAB). Of all the tested heavy metals, biosorption by LAB was highest for mercury, followed by lead, cadmium, and finally arsenic.

Antioxidant capacity of soymilk yogurt and exopolysaccharides produced by lactic acid bacteria.

Reactive oxygen species (ROS), such as hydroxyl and superoxide anion radicals, are highly reactive molecules derived from the metabolism of oxygen. ROS play positive roles in cell physiology, but they may also damage cell membranes and DNA, inducing oxidation that causes membrane lipid peroxidation and decreases membrane fluidity. Soymilk yogurt, which is soymilk fermented using lactic acid bacteria (LAB), is an excellent food item with numerous functional substances with antioxidant effects.

Increased phenolic content and antioxidant capacity of the heated leaves of yacon ().

We investigated the content of phenolic compounds and antioxidant capacity of two batches of non-heated and heated leaves of the yacon cultivar "Andes no yuki", grown in Japan. Lyophilized yacon leaves heated at 160°C for 20 min and 100°C for 60 min had a 1.96 to 9.

Unique antioxidant effects of herbal leaf tea and stem tea from Moringa oleifera L. especially on superoxide anion radical generation systems.

This study aimed to investigate the unique antioxidative effects of Japanese moringa products, herbal leaf tea and stem tea, using established free radical assays, focusing on superoxide anion (O) radical generation systems. Hot-water extracts from moringa teas resulted in different but lower scavenging activities than Trolox in four synthetic free radical models. Interestingly, these extracts further showed higher O radical scavenging effects than Trolox in the phenazine methosulfate-NADH-nitroblue tetrazolium and xanthine oxidase assay systems.

Lactobacillus paracasei strain 06TCa19 suppresses inflammatory chemokine induced by Helicobacter pylori in human gastric epithelial cells.

Helicobacter (H.) pylori infection is an important risk factor for gastric cancer that causes gastric inflammation. Inflammatory chemokines such as interleukin (IL)-8 and regulated on activation normal T cell expressed and secreted (RANTES) are elevated in the gastric mucosa by H.

Antioxidant Effects of Herbal Tea Leaves from Yacon (Smallanthus sonchifolius) on Multiple Free Radical and Reducing Power Assays, Especially on Different Superoxide Anion Radical Generation Systems.

Unlabelled: Yacon (Smallanthus sonchifolius), a native Andean plant, has been cultivated as a crop and locally used as a traditional folk medicine for the people suffering from diabetes and digestive/renal disorders. However, the medicinal properties of this plant and its processed foods have not been completely established. This study investigates the potent antioxidative effects of herbal tea leaves from yacon in different free radical models and a ferric reducing model.

Anti-inflammatory and antioxidative effects of a methanol extract from bulbs of Scilla scilloides.

The extract from bulbs of Scilla scilloides exhibited inhibitory effects in lipoxygenase and hyaluronidase assays and various oxidation models in vitro. Incubating the cells in the presence of this extract ameliorated t-butyl hydroperoxide-induced cytotoxicity from 27% to 57% in a macrophage model. The results may indicate the potential role of S.

Steroidal glycosides from the underground parts of Solanum sodomaeum.

A new steroidal glycoside has been isolated from the underground parts of Solanum sodomaeum L., along with seven known steroidal glycosides. Their chemical structures were determined on the basis of spectroscopic data and chemical evidence, and the structure of one known pregnane type glycoside was corrected.

A new triterpene glucosyl ester from the fruit of the blackberry (Rubus allegheniensis).

A new triterpene glucosyl ester, rubusside A, has been isolated from the fruit of the blackberry (Rubus allegheniensis PORT.) along with a known triterpene glucosyl ester, niga-ichigoside F1. The chemical structure of rubusside A was determined on the basis of spectroscopic data as well as chemical evidence.

Antioxidant ortho-benzoyloxyphenyl acetic acid ester, vaccihein A, from the fruit of rabbiteye blueberry (Vaccinium ashei).

A new ortho-benzoyloxyphenyl acetic acid ester, called vaccihein A (1), was isolated from the fruit of rabbiteye blueberry (Vaccinium ashei). The chemical structure was determined on the basis of spectroscopic data. Compound 1 had antioxidative activity using the ferric thiocyanate method.