This study aimed to evaluate the antioxidant effect of Lactobacillus plantarum SCS2 (L. plantarum SCS2). After 1 week of acclimation, 120 male KM mice were divided into normal group (NG), model group (MG), solvent control group (KG), and different test groups (TG1, TG2, TG3) (n = 20/group) randomly. In the second week, except NG mice, other mice were given 0.2 ml 50 mg/kg (body weight) streptozocin (STZ) through intraperitoneal injection for 5 days. After successful modeling, NG and MG mice were fed normally, KG mice was given 0.5 ml 0.1 mol/L phosphate buffer saline (PBS) per day, TG1, TG2, and TG3 mice were given 0.5 ml suspension, intracellular content and heat‐killed intracellular content of L. plantarum SCS2 per day for 9 weeks. Body weight and blood glucose were observed and recorded during intragastric administration. Glucose tolerance levels were measured at the twelfth week, then mice were sacrificed and the serum was collected to measure insulin (INS), glycosylated hemoglobin (HbA1c), malondialdehyde (MDA), reactive oxygen species (ROS) and antioxidant enzymes. The results showed that the reduction of weight loss in TG1 and TG2 mice was observed, which was consistent with the blood glucose. At the same time, the INS level of TG1, TG2, and TG3 mice were increased and the HbA1c levels were decreased. Otherwise, the MDA and ROS content in the serum of TG1, TG2, and TG3 mice were decreased and the level of antioxidant enzymes was increased. Interestingly, the activity and content of antioxidant enzymes in TG2 group was the highest in the three test groups. Practical applications The results of this study showed that L. plantarum SCS2 could effectively reduce blood glucose, relieve weight loss, improve INS deficiency, and also improve oxidative stress by increasing the activity of antioxidant enzymes. The findings suggest that L. plantarum SCS2 could improve diabetes‐related symptoms by alleviating oxidative stress. In the future, people could promote the application of lactic acid bacteria (LAB) which is found in traditional foods with the ability of improving oxidative damage in food nutrition and related fields, so as to guide residents to form good dietary habits, and effectively prevent type 2 diabetes. Meanwhile, it also can enhance the edible value of traditional foods.
As a major food production crop in China, the growth and development of rice is an extremely complex systemic process, and the root system is the main organ for rice to obtain nutrients. Therefore, 3D modeling and visualization of the rice root system can help to further understand its morphology, structure and function, and provide an aid for scientific cultivation of rice and improving rice yield for decision making. In this paper, a mathematical model of the rice root system is established based on the B spline curve combined with the L-system approach, using mathematical knowledge based on the 3D morphological characteristics of the real rice root system. The B-Spline Curve is chosen to simulate this, and the recursive definition of B-Spline Curve and its formula are used to realize the modeling of the rice root system curve. Based on the mathematical method of rice root system integration, the bending effect of rice root system at different periods and different growth positions is realized. Finally, the L-system combined with B-Spline Curve is used to construct a rice root system model and realize the rice root system visualization simulation. The simulated image is closer to the real rice root system image in terms of morphological structure and has a strong sense of realism.
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