Preparation method of freeze-drying ginkgo fruit

Abstract

The invention relates to a preparation method of freeze-drying ginkgo fruit, which mainly comprises the following steps of: scalding gingkoes with testa removed; removing endotesta; subjecting the gingkoes to treatments of debitterizing, curing, secondary cooking in sugar, and sugaring; freezing and drying the gingkoes in vacuum to reach the water content of less than 3% and the sugar content of 9-15% in the product; and finally adopting deoxidized packaging to obtain a freeze-drying ginkgo fruit product. As the raw materials are subjected to the debitterizing, curing and color protection treatments in the invention, the bad bitter taste of internal buds in the gingkoes is overcome, the appearance, shape and color of gingko nutlet are kept unchanged, and the crispness and hardness of the product are increased. As the secondary cooking in sugar and the sugaring are performed, nutrient components of the product are increased, and the palatability of the product is improved; the water content is lower than 3% at the same time as the biological active components in the gingko nutlet are preserved to the maximum extent due to the freezing and drying of the gingkoes in vacuum; therefore, the preparation method is suitable for preserving the product; moreover, the freeze-drying ginkgo fruit is suitable for people to carry and have in leisure and a trip.

Description

technical field [0001] The invention belongs to the field of food processing, in particular to a preparation method of freeze-dried ginkgo fruit. technical background [0002] Ginkgo biloba, also known as Ginkgo semen, is the dry mature seed of Ginkgo biloba, a plant of Ginkgo biloba, whose outer skin has been removed. Seeds contain sucrose (about 6%), protein, fatty oil, etc. The pulp contains ingredients such as ginkgophenol and ginkgo acid. Seeds (Ginkgo biloba) moisturize the lungs, relieve cough, and eliminate phlegm, and are used for asthmatic cough (Edited by Chen Xinqian·Newly edited Pharmacology [M]. People's Health Publishing House, 1979, Tenth Edition, pages 364-365). Ginkgo biloba was first recorded in the Compendium of Materia Medica (written by Li Shizhen in the Ming Dynasty. Compendium of Materia Medica [M]. People's Health Publishing House, 1985, 1801-1802 pages.), and it is described: "Raw food induces malnutrition and relieves alcohol, cooked food benefit...

AI Technical Summary

Problems solved by technology

my country is a big planting country of ginkgo (ginkgo fruit), and its output ranks first in the world. Currently, ginkgo in cans (bottles) or in bags is commonly used as a cooking seasoning, and there are also products such as dry-fried ginkgo fruit in bags and dehydrated ginkgo powder. However, its products are still some traditional monotonous products, which cannot meet the needs of people's pursuit of fashionable life

The development of freeze-dried ginkgo fruit with good crispness, crisp fragrance and sweet taste has not yet been reported