The factors related to depressive symptoms in urban older adults in South Korea: a study based on the Seoul Aging Survey.

Purpose: This study aims to comprehensively examine the determinants of depression among urban older adults in Seoul, utilizing the social-ecological model to address multifaceted influences.

Methods: A comprehensive analysis was conducted using data from the 2022 Seoul Aging Survey, which surveyed 2,914 individuals aged 65 and above. A multiple logistic regression analysis was performed to identify factors contributing to depressive symptoms, including socio-demographic characteristics, health behaviors and status, research accessibility, social support, and environmental influences.

Developing Equations for Converting Digestible Energy to Metabolizable Energy for Korean Hanwoo Beef Cattle.

This study was performed to update and generate prediction equations for converting digestible energy (DE) to metabolizable energy (ME) for Korean Hanwoo beef cattle, taking into consideration the gender (male and female) and body weights (BW above and below 350 kg) of the animals. The data consisted of 141 measurements from respiratory chambers with a wide range of diets and energy intake levels. A simple linear regression of the overall unadjusted data suggested a strong relationship between the DE and ME (Mcal/kg DM): ME = 0.

In Vitro Screening of East Asian Plant Extracts for Potential Use in Reducing Ruminal Methane Production.

Indiscriminate use of antibiotics can result in antibiotic residues in animal products; thus, plant compounds may be better alternative sources for mitigating methane (CH) production. An in vitro screening experiment was conducted to evaluate the potential application of 152 dry methanolic or ethanolic extracts from 137 plant species distributed in East Asian countries as anti-methanogenic additives in ruminant feed. The experimental material consisted of 200 mg total mixed ration, 20 mg plant extract, and 30 mL diluted ruminal fluid-buffer mixture in 60 mL serum bottles that were sealed with rubber stoppers and incubated at 39 °C for 24 h.

sp. nov., bacterium isolated from soil in South Korea.

A newly isolated bacterial strain designated as HKS19 was isolated from a ginseng cultivation soil sample collected in South Korea. Cells of the strain HKS19 were Gram-stain-negative, rod, oval-shaped and they formed yellow colonies when grown on R2A agar at 30 °C. HKS19 showed the highest 16S rRNA gene sequence similarity (98.

Anthocyanins in Floral Colors: Biosynthesis and Regulation in Chrysanthemum Flowers.

Chrysanthemum () is an economically important ornamental crop across the globe. As floral color is the major factor determining customer selection, manipulation of floral color has been a major objective for breeders. Anthocyanins are one of the main pigments contributing to a broad variety of colors in the ray florets of chrysanthemum.

Electrospun Alumina-Nanofiber-Supported Pt-Sn Catalyst for Propane Dehydrogenation.

Alumina nanofibers (ANFs) were successfully fabricated using electrospinning technology. ANF samples were then calcined at temperatures ranging from 900-1200°C, denoted ANF-900 through ANF-1200 in accordance with their calcination temperatures. Using a wet process, each ANF sample was impregnated with Pt (3 wt%) and Sn (4.

Hankyongella ginsenosidimutans gen. nov., sp. nov., isolated from mineral water with ginsenoside coverting activity.

In this study, a novel ginsenoside transforming bacterium, strain W1-2-3, was isolated from mineral water. The 16S rRNA gene sequence analysis showed that strain W1-2-3 shares 93.7-92.

Dynamic changes of multi-notoginseng stem-leaf ginsenosides in reaction with ginsenosidase type-I.

Background: Notoginseng stem-leaf (NGL) ginsenosides have not been well used. To improve their utilization, the biotransformation of NGL ginsenosides was studied using ginsenosidase type-I from g.848.

Ginsenoside Rk1 Induces Apoptosis in Neuroblastoma Cells Through Loss of Mitochondrial Membrane Potential and Activation of Caspases.

Neuroblastoma (NB) is the most common childhood cancer, with a very poor prognosis. More than 60% of children with NB die within five years; therefore, a more effective therapy for NB is required. Although ginsenoside has been shown to significantly inhibit the growth of various cancers, the effect of ginsenoside Rk1 on neuroblastoma has not been known yet.

Ottowia konkukae sp. nov., isolated from rotten biji (tofu residue).

A Gram-negative, aerobic, non-motile, non-spore-forming and rod-shaped bacterial strain, designated SK3863, was isolated from rotten biji (residue remaining after making tofu). This bacterium was characterized in order to determine its taxonomic position by using the polyphasic approach. Strain SK3863 grew well at 25-37 °C on Reasoner's 2A agar plates.

Olivibacter ginsenosidimutans sp nov., with ginsenoside converting activity isolated from compost, and reclassification of Pseudosphingobacterium domesticum as Olivibacter domesticus comb. nov.

A Gram-stain-negative, aerobic and rod-shaped, bacterium designated as strain BS18, was isolated from compost and subjected to a polyphasic taxonomic analysis. On the basis of the results of 16S rRNA gene sequence analysis, BS18 represents a member of the genus Olivibacter of the family Sphingobacteriaceaeand is most closely related to Olivibacter oleidegradansTBF2/20.2 (93.

Flavobacterium hankyongi sp. nov., isolated from activated sludge.

A Gram-stain-negative, aerobic, non-motile and rod-shaped bacterium, designated strain KTCe-4, was isolated from activated sludge. Based on 16S rRNA gene sequencing and phylogenetic analysis, the novel isolate was found to belong to the genus Flavobacterium and was most closely related to Flavobacteriumterrae DSM 18829 (97.8 %), Flavobacteriumvireti THG-SM1 (97.

Paenibacillus azotifigens sp. nov., a novel nitrogen-fixing bacterium isolated from paddy soil.

A nitrogen-fixing bacterium, designated NF2-4-5, was isolated from a paddy soil in Anseong City, Korea. Cells of strain NF2-4-5 were Gram-staining-positive, motile rods and aerobic. Phylogenetic analysis based on 16S rRNA gene sequence comparison revealed that the strain formed a distinct lineage within the genus Paenibacillus and was closely related to Paenibacillus graminis RSA19 (98.

Paenibacillus konkukensis sp. nov., isolated from animal feed.

A Gram-stain-positive, oxidase- and catalase-positive, aerobic, rod-shaped bacterium, designated strain SK-3146T, was isolated from animal feed. Phylogenetic analysis, based on 16S rRNA gene sequence comparisons, revealed that the strain formed a distinct lineage within the genus Paenibacillus that was closely related to Paenibacillusyunnanensis JCM 30953T (98.6 %), Paenibacillusvulneris CCUG 53270T (98.

Comparative analysis of the expression level of recombinant ginsenoside-transforming β-glucosidase in GRAS hosts and mass production of the ginsenoside Rh2-Mix.

The ginsenoside Rh2, a pharmaceutically active component of ginseng, is known to have anticancer and antitumor effects. However, white ginseng and red ginseng have extremely low concentrations of Rh2 or Rh2-Mix [20(S)-Rh2, 20(R)-Rh2, Rk2, and Rh3]. To enhance the production of food-grade ginsenoside Rh2, an edible enzymatic bioconversion technique was developed adopting GRAS host strains.

Panacibacter ginsenosidivorans gen. nov., sp. nov., with ginsenoside converting activity isolated from soil of a ginseng field.

A ginsenoside-transforming bacterium, designated Gsoil 1550T, was isolated from soil of a ginseng field and subjected to a polyphasic taxonomic analysis. Colonies of strain Gsoil 1550T were yellow, of low convexity and with regular margin. Cells were long rods, 0.

Hymenobacter coalescens sp. nov., isolated from wetland freshwater.

A non-motile and rod-shaped bacterium, designated strain WW84T, was isolated from freshwater collected from the Woopo wetland (Republic of Korea). Cells were Gram-stain-negative, aerobic, catalase-positive and oxidase-negative. The major fatty acids were C16 : 0, C18 : 0, iso-C15 : 0 and iso-C17 : 1I and/or anteiso-C17 : 1B.

Pseudobacter ginsenosidimutans gen. nov., sp. nov., isolated from ginseng cultivating soil.

A Gram-stain-negative, pseudo-rod, non-spore-forming, oxidase- and catalase-positive, strictly aerobic bacterium, designated Gsoil 221T, was isolated from soil of a ginseng field and subjected to a taxonomic analysis using a polyphasic approach. Strain Gsoil 221T grew at 10-37 °C and at pH 5.0-8.

Humibacter soli sp. nov., isolated from soil.

A novel actinobacterial strain, designated R1-20, was isolated during a study of the bacterial diversity of the soil at a white heron nesting site. The isolate was non-motile, Gram-stain-positive and short rod-shaped. Colonies were dull white and convex with entire margin during the early stages of growth, and gradually became yellow.

Lysobacter pocheonensis sp. nov., isolated from soil of a ginseng field.

A Gram-staining-negative, non-spore-forming, non-flagellated, rod-shaped, catalase- and oxidase-negative bacterium, designated as Gsoil 193(T), was isolated from the soil of ginseng field in Pocheon province, South Korea. 16S rRNA gene sequence analysis showed that strain Gsoil 193(T) belonged to family Xanthomonadaceae and was most closely related to Lysobacter daecheongensis KCTC 12,600(T) (96.4 %), Lysobacter panaciterrae KCTC 12601(T) (96.

Niabella aquatica sp. nov., isolated from lake water.

A Gram-reaction-negative, strictly aerobic, non-motile, yellow and rod-shaped bacterium (designated RP-2T) isolated from lake water, was characterized by a polyphasic approach to clarify its taxonomic position. Strain RP-2T was observed to grow optimally at 30 °C and at pH 7.0 on R2A medium.

Marmoricola ginsengisoli sp. nov. and Marmoricola pocheonensis sp. nov. isolated from a ginseng-cultivating field.

Two novel actinobacteria, designated strains Gsoil 097T and Gsoil 818T, isolated from soil of a ginseng field, South Korea, were characterized by a polyphasic approach to clarify their taxonomic positions. They were Gram-reaction-positive, aerobic, non-spore-forming and rod-shaped. Phylogenetic analysis based on 16S rRNA gene sequences indicated that both isolates belong to the genus Marmoricola and were related most closely to Marmicola solisilvae KIS18-7T (99.

gen. nov., sp. nov., isolated from soil cultivating ginseng.

A Gram-stain-negative, rod-shaped, non-spore-forming, oxidase and catalase-positive, strictly aerobic bacterium, designated strain Gsoil 524, was isolated from the soil of a ginseng field and subjected to polyphasic taxonomic analysis. Phylogenetic analysis, based on the 16S rRNA gene sequence, placed Gsoil 524 in a distinct lineage in the family , sharing 87.2-88.

Niabella ginsenosidivorans sp. nov., isolated from compost.

A Gram-reaction negative, strictly aerobic, non-motile, orange colored, and rod-shaped bacterium (designated BS26(T)) isolated from compost, was characterized by a polyphasic approach to clarify its taxonomic position. Strain BS26(T) was observed to grow optimally at 25-30 °C and at pH 7.0 on R2A and nutrient media.

Lysobacter hankyongensis sp. nov., isolated from activated sludge and Lysobacter sediminicola sp. nov., isolated from freshwater sediment.

Two novel strains, designated KTCe-2T and 7C-9T, isolated from an activated sludge and freshwater sediment, respectively in South Korea, were characterized by a polyphasic approach to clarify their taxonomic positions. Phylogenetic analysis based on 16S rRNA gene sequences indicated that both isolates belong to the genus Lysobacter and are most closely related to 'Lysobacter daecheongensis' Dae 08 (98.5 % and 97.