【1】Commodity name Baking soda, sodium bicarbonate, acid sodium carbonate, heavy tank

【2】Chemical name Sodium bicarbonate

【3】CAS No. 144-55-8

【4】Molecular formula NaHCO3

【5】Relative molecular mass 84.01

【6】Physical and chemical properties

White powder or monoclinic crystalline powder, odorless, salty, easily soluble in water, but less soluble in water than sodium carbonate, insoluble in ethanol, slightly alkaline in aqueous solution. Easily decomposed by heat. Decomposes slowly in moist air.

【7】Features

Sodium bicarbonate has no direct bactericidal effect. Its function is that it is a salt compound formed by a strong base and a weak acid. After dissolving in water, the solution is alkaline. The pH of tap water can reach 7.66 to 8.6. After being treated with sodium bicarbonate for a certain period of time, the pH of the fruit surface will increase, which can inhibit the growth and reproduction of Penicillium and green mold which like slightly acidic environment, and reduce the pathogenic factors of microorganisms.

【8】Application Technology

1.Rinse treatment

Fruit and Vegetable

As an alkaline detergent, it washes fruits and vegetables with 2% sodium bicarbonate solution, cleans the residual dirt and bacteria on the surface, reduces the density and quantity of mold in the storage environment, and indirectly reduces the rate of decay. .

2.Fruit soaking treatment

Tangerine

On the day after harvest, soak the fruit with 2.5% sodium bicarbonate solution and 200mg/L 2,4-D solution for 0.5-1min. After the fruit surface is dry, pack it in a small polyethylene film bag, tighten the bag mouth and store at room temperature, which can promote The stalks are kept green, the rot rate is reduced, and the taste of the fruit is not affected.

Tangerine

After harvesting, the fruit was soaked in 1.5% sodium bicarbonate solution for 3 minutes, and then stored for 60 days after drying. Compared with the control, the respiration intensity, weight loss rate and rot rate were reduced by 12.3%, 2.59% and 27.6% respectively, and the fruit firmness was 42.8% higher than that of the control. %, has a more significant fresh-keeping effect.

【9】Notes

①Sodium bicarbonate is stored in an airtight container and stored in a dry place.

②Sodium bicarbonate is used for antisepsis, and the effect is not durable enough.