Timing is everything: the age-related impact of plyometric training on lower limb explosive strength in male adolescents and its general effectiveness in female adolescents.

Objective: This study investigates the impact of plyometric training on age-related lower limb explosive strength in male adolescents and its effectiveness in female adolescents.

Methods: A thorough search was conducted across five databases from their inception until September 20, 2024. Study quality was assessed using the Cochrane Risk Assessment Tool, and data analysis was performed with Stata 15 software.

Maturation-specific enhancements in lower extremity explosive strength following plyometric training in adolescent soccer players: A systematic review and meta-analysis.

Background: For adolescent soccer players, good sprinting and jumping abilities are crucial for their athletic performance. The application of plyometric training on boosting explosive strength in adolescent soccer players is contingent upon the maturation phase, which can mediate the training-induced adaptations.

Purpose: This systematic review and meta-analysis aim to explore the maturation effect of plyometric training on the lower limb explosive power of adolescent soccer players, with vertical countermovement jump (CMJ) and 20-m sprint as the main outcome indicators.

A Biomass-Based Colorimetric Sulfur Dioxide Gas Sensor for Smart Packaging.

Sulfur dioxide (SO) gas, which can effectively prohibit the growth of pathogenic microorganisms, has been internationally used in commercial food packaging to maintain high-quality food and reduce the incidence of foodborne illnesses. However, the current mainstream methods for SO detection are either large and expensive instruments or synthesized chemical-based labels, which are not suitable for large-scale gas detection in food packaging. Recently, we discovered that petunia dye (PD), which is extracted from natural petunia flowers, demonstrates a highly sensitive colorimetric response to SO gas with its total color difference (Δ) modulation reaching up to 74.

Preparation and insecticidal performance of sustained-release cinnamon essential oil microemulsion.

Background: To improve the utilization rate of cinnamon essential oil and compensate for the shortcomings of its easy decomposition and oxidation, the microemulsion of cinnamon essential oil was prepared using Tween 80 and anhydrous ethanol as surfactant and cosurfactant, respectively. The effects of the surfactant type, K value, preparation temperature and aqueous pH on the quality of the microemulsion were studied via a pseudo-ternary phase diagram. The slow-release performance of cinnamon essential oil microemulsion and the control performance of the insect repellent package on the rice weevil were characterized.

Effect of citronella essential oil fumigation on sprout suppression and quality of potato tubers during storage.

Effect of citronella essential oil (CEO) fumigation on sprout suppression and quality of potato tubers during storage was investigated. Potato tubers were treated under conditions of single-phase (30 μL L, 0-10 d) and dual-phase (30 μL L, 0-10 d; 30 μL L, 35-90 d) fumigation. Changes in germination rate, weight loss, starch, reducing sugar, gibberellins (GA), and α-solanine were measured.

Application of a Predictive Growth Model of Pseudomonas spp. for Estimating Shelf Life of Fresh Agaricus bisporus.

For prediction of the shelf life of the mushroom Agaricus bisporus, the growth curve of the main spoilage microorganisms was studied under isothermal conditions at 2 to 22°C with a modified Gompertz model. The effect of temperature on the growth parameters for the main spoilage microorganisms was quantified and modeled using the square root model. Pseudomonas spp.

Effects of UV-C treatment and cold storage on ergosterol and vitamin D2 contents in different parts of white and brown mushroom (Agaricus bisporus).

Effects of ultraviolet-C (UV-C) treatment (0.5, 1.0 and 2.

[Effects of Red Light-Emitting Diode (LED) on the Postharvest Yellowing Change of Broccoli].

As an important factor affecting the growth and development of plants, light gives wide range regulating effects on physiological metabolisms, photosynthesis characteristic, quality and aging of plants during the growth . However, the research whether light can improve the quality of fruits and vegetables and prolong the storage period of is rarely reported home and abroad. Three monochromatic light , red, blue and green were used to the irradiation of broccoli.

Production of medium-chain volatile flavour esters in Pichia pastoris whole-cell biocatalysts with extracellular expression of Saccharomyces cerevisiae acyl-CoA:ethanol O-acyltransferase Eht1 or Eeb1.

Medium-chain volatile flavour esters are important molecules since they have extensive applications in food, fragrance, cosmetic, paint and coating industries, which determine different characteristics of aroma or taste in commercial products. Biosynthesis of these compounds by alcoholysis is catalyzed by acyl-CoA:ethanol O-acyltransferases Eht1 or Eeb1 in Saccharomyces cerevisiae. In this study, these two yeast enzymes were selected to explore their preparations as the form of whole cell biocatalysts for the production of volatile flavour esters.

Fate of E. coli O157:H7, Salmonella spp. and potential surrogate bacteria on apricot fruit, following exposure to UV-C light.

Some soft fruit, such as tree-ripened apricots, cannot be washed with aqueous sanitizers, due to their innate softness and delicate surfaces. In this study, ultraviolet-C (UV-C) light was investigated for its efficacy in inactivating 4-5 individual strains of Escherichia coli O157:H7 and Salmonella spp. on apricots, in addition to a four-strain composite of Shiga toxin-negative E.

In vitro antifungal activity and mechanism of action of chitinase against four plant pathogenic fungi.

To determine why chitinase has different antifungal activity on different pathogenic fungi in vitro, we purified recombinant rice chitinase from Pichia pastoris and investigated its antifungal activity against four fungi - Rhizopus stolonifer (Ehrenb. et Fr.) Vuill, Botrytis squamosa Walker, Pythium aphanidermatum (eds.

High-level expression of fusion protein containing 10 tandem repeated GLP-1 analogs in yeast Pichia pastoris and its biological activity in a diabetic rat model.

Glucagon-like peptide-1 (GLP-1), an incretin secreted by intestinal L-cells, can effectively lower blood glucose levels in patients with diabetes. A fusion gene, consisting of 10 tandem repeated GLP-1 analog genes, was expressed at a high level in the yeast Pichia pastoris. SDS polyacrylamide gel electrophoresis (SDS-PAGE), and Western Blotting results showed that fusion protein migrated as a single protein band with a molecular weight of 36 kDa.

Oral administration of a fusion protein containing eight GLP-1 analogues produced in Escherichia coli BL21(DE3) in streptozotocin-induced diabetic rats.

Glucagon-like peptide-1 (7-36) amide (GLP-1), a gut hormone released into the blood stream after feeding, can stimulate insulin secretion by potentiating the insulinotropic action of glucose. An expression vector pET-22bG8, encoding a fusion protein containing eight tandem repeat GLP-1 ([Ser(8), Gln(26), Asp(34)]-GLP-1) analogues, was constructed and transformed into the Escherichia coli BL21(DE3) strain over-expressing the His-tagged fusion protein under the IPTG promoter. SDS-PAGE and Western blot analysis demonstrated that the His-tagged GLP-1 fusion protein migrated as a single protein with a molecular weight of 32 kDa.

Growth promoting effect of a transgenic Bacillus mucilaginosus on tobacco planting.

In this study, we have investigated the plant growth promoting effect of Bacillus mucilaginosus strain D(4)B(1), a rhizosphere soil organism, and its transgenic strain NKTS-3 on tobacco planting. The transgenic strain contains a phytase expression cassette that can express high active phytase extracellularly and hydrolyze phytate in the soil to liberate inorganic phosphorus for the growth of tobacco plants. Greenhouse study and field experiments showed that both wild-type B.

Comparison of composition and antifungal activity of Artemisia argyi Lévl. et Vant inflorescence essential oil extracted by hydrodistillation and supercritical carbon dioxide.

Essential oil of Artemisia argyi Lévl. et Vant inflorescence was obtained by supercritical CO(2) extraction and hydrodistillation. The oil was analyzed by gas chromatography/mass spectrometry to characterize its components and was also tested for antifungal activity.