d-galactose was injected into mice of ages 4-5 months, and peony seed oil was administered using an oral gavage to assess its possible anti-aging functions. The content of malondialdehyde (MDA) and the activities of monoamine oxidase (MAO), glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD) in the brain and liver of these mice were determined using biochemical kits. The significance of the differences in the content of the components associated with aging and anti-aging among each group was analyzed statistically. The MDA content and activities of MAO in the brain and liver of mice in the peony seed oil group were significantly lower than those in the aging group. The activities of GSH-Px, Cu/Zn-SOD, and Mn-SOD in the brain and liver of mice in the peony seed oil group were very significantly higher than those in the aging group. Peony seed oil was determined to have an obvious anti-aging function.

No abstract

Background: Increased occurrence of chronic syndromes has prompted researchers to investigate and develop drugs

Investigating anti-aging factors that is more effective than antioxidants has important theoretical significance and application value. In search for nutritional ingredients that are more effective in anti-aging, two different multivitamins (multivitamin-1 at a dose of 2.5 mg/kg body weight [BW]/day; multivitamin-2 at a dose of 5.4 mg/kg BW/day) were administered to aging mice (N = 40) induced by D-galactose. The content or activity of the biochemical components associated with aging and anti-aging in the brain and the liver of the experimental mice was then determined for analysis of statistically significant difference among the groups. Results showed the mice in the aging model group exhibited obvious senility symptoms. However, the mice in the multivitamin-1 andmultivitamin-2 groups were essentially similar to those of the control group, but were obviously better than the mice in the aging model group. Multivitamin-1 and multivitamin-2 decreased significantly the malondialdehyde (MDA) content and monoamine oxidase (MAO) activity (P< 0.01), and increased significantly the activity of glutathione peroxidase (GSH-Px), copper/zinc-superoxide dismutase (Cu/Zn-SOD) and manganese-superoxide dismutase (Mn-SOD) (P< 0.01) in the brain and the liver of the aging mice. There was no significant difference (P> 0.05) between the effects of the two multivitamins on the components associated with aging and anti-aging. In conclusions, this work showed that vitamins B₁, B₂, B₆ and PP (Nicotinic acid or vitamin B₃) play key roles in the anti-aging process of multivitamin-2. Vitamins B₁, B₂, B₆, and PP are more effective nutrients in anti-aging in mice.

Rice is one of the most important food crops in the world. Its biggest flaw is the low content of protein and essential amino acids, which severely limits its nutritional value. In order to produce high-quality rice with rich Se, we sprayed different concentrations of compound nutrient solution (containing Se (selenium), amino acid compound, zinc and boron) on the rice at different growth stages; and then determined the main nutrient content of their polished rice. The results showed that spraying low concentration compound nutrient solution (Each liter contained 20 mg of Se, 333 mg of complex amino acids, 33 mg of zinc and 33 mg of boron) to rice in the heading stage produced rice with the highest total starch and fat content and lower amylose content. Spraying high concentration compound nutrient solution to rice during the filling stage produced rice with the highest Se content. Multiple sprays of compound nutrient solution produced rice with low protein and low starch. Spraying low concentration compound nutrient solution on rice in milky stage significantly increased the content of protein, total starch, fat, all essential amino acids (Lysine increased by more than 57%), amylopectin and Se in rice; significantly reduced amylose content; significantly improved the nutritional value and taste quality of rice. The conclusion is that spraying low concentration compound nutrient solution on rice in the milky stage can produce rice with the highest content of protein and essential amino acids, higher content of total starch, fat and Se, and the lowest amylose content; significantly improve the nutritional value and taste quality of rice. The technical solution can comprehensively and effectively improve the nutritional value and flavor quality of rice, and has great development and application value.