How to preserve dried Siraitia grosvenorii
Some people may think of keeping dried Siraitia grosvenorii in the refrigerator, but this is not a good idea. The reasonable storage environment of dried Siraitia grosvenorii is cool, ventilated and dry. Under suitable conditions, Siraitia grosvenorii can be stored for more than one and a half years.
If the products of Siraitia grosvenorii are not opened (within the shelf life), the nutrition of Siraitia grosvenorii will only be slightly lost, and the 100% seal of the products can be completely guaranteed without strict packaging. So when we start eating Siraitia grosvenorii products, first, we should pay attention to eating them within the shelf life as much as possible; Second, the Siraitia grosvenorii products should be resealed after each consumption to ensure that the least air enters the products and reduce the chemical reaction between the products and the air, resulting in moldy and stale products.
How to preserve fresh Siraitia grosvenorii
Fresh Siraitia grosvenorii is also wet Siraitia grosvenorii, which contains water and cannot be preserved for a long time like dried Siraitia grosvenorii. It should be eaten within 24 hours as much as possible like fruit, so as to ensure the nutrition and taste of Siraitia grosvenorii. Generally, Siraitia grosvenorii is picked when it is just ripe, and its color is blue and yellow. Then it will be put in a storage room, cooked one by one, dried and dehydrated or sold directly to other dealers and processing plants for secondary sales. Siraitia grosvenorii will go through a "post-ripening" period before processing or selling. "Lingnan Materia Medica Collection" records the processing process of Siraitia grosvenorii: "Pick the fruit when it is ripe in September-10, put it on the ground to make it late-ripe, and the peel will turn from turquoise to yellow in about 8- 10 days, bake it on the kang with fire, and it will become dry fruit with knocking sound after 5-6 days, then brush it again, wrap it in paper and box it."
When Siraitia grosvenorii is spread to dry, the fruits should not be piled together, only one layer should be spread to prevent vomiting due to poor ventilation. In the process of spreading Siraitia grosvenorii, it should be turned 1 time every day, and when most of the skin color turns yellow, it can be baked in the furnace.
If you want to preserve half-eaten fresh Siraitia grosvenorii, you must put it in the refrigerator, because the nutrients in Siraitia grosvenorii will react with the ingredients in the air, especially when the room temperature is high in summer. Moreover, the raw Siraitia grosvenorii will breed a lot of bacteria if it is kept for a long time, and eating it will affect your health. The ripe Siraitia grosvenorii has been stored for more than a week. If the air is not good, Siraitia grosvenorii is packed in a box, which is airtight and will produce spots and rot, so the storage time of the cut Siraitia grosvenorii will be shorter.
Does Siraitia grosvenorii have a shelf life?
The shelf life of traditional Chinese medicine generally varies according to its processing and morphology. If your Siraitia grosvenorii is dry, there is no mildew, odor, discoloration and other phenomena inside after opening, and it can be used completely.
Siraitia grosvenorii is black inside, which may deteriorate or turn black due to burning.
If it goes bad, then Siraitia grosvenorii can't be used any more. If it is burnt, Siraitia grosvenorii can barely be used. Just because of burning, the medicinal properties of Siraitia grosvenorii have changed, the nutritional value has become lower, and the medicinal effect is not satisfactory.
A good Siraitia grosvenorii peel is light in color, light brown or orange yellow, with more fluff, dark brown peel and light yellow or light brown core. The nucleus is generally dark brown, burnt, fragrant, odorless, burnt, strong in medicinal flavor and slightly smoky.
Siraitia grosvenorii powder is brown. Pericarp stone cells are mostly in groups, yellow, square or oval, with a diameter of 7-38 microns, thick wall and obvious holes and grooves. Seed coat stone cells are rectangular or irregular, with thin walls and pits. The fiber is spindle-shaped, with a diameter of16-42 μ m, a large cell cavity and obvious wall pores. You can see trapezoidal patterns and threaded conduits. The parenchyma cells are irregular and have pits.