How to preserve fresh Toon Bud

Fresh Toona sinensis buds are graded according to thickness, length and color, packed in plastic or paper bags, placed in a cool and ventilated place or in the refrigerator, open the bag mouth once a day for ventilation, and can be kept fresh for 10-20 days.

I. short-term fresh-keeping and storage method

1. Picking and preservative treatment: Toona sinensis buds used for short-term preservation can be picked in the morning on a sunny day, when the vegetable body temperature is low, which is beneficial to preservation. Before harvest, 50 × 10-6 6 benzylaminopurine (6-BA) can be sprayed on the leaf, and the agent can be harvested immediately after drying.

2. Bagged storage. After harvest, Toona sinensis is graded according to thickness, length and color, bundled into a small handful of 500 grams (not too tight), packed in plastic or paper bags, placed in a cool and ventilated place or in the refrigerator, open the bag mouth once a day for ventilation, can be kept fresh for 10-20 days.

Second, the method of long-term fresh storage. Reminder, the experiment shows that blanching and quick-freezing fresh-keeping can keep the buds of Toona sinensis for more than one year, and the flavor and quality of Toona sinensis can not be changed when eating.

The technological process of quick-freezing and fresh-keeping of Toona sinensis sprouts is as follows: cleaning, → blanching, → cooling, → bagging, → quick-freezing.

Cleaning: the buds of Toona sinensis are purplish red and the buds are 10-15 cm long. Wash the buds with clean water to remove dust, soil and so on. Pay attention to do not rub when cleaning, so as not to cause tissue damage.

Blanching: use 0.2% sodium bicarbonate as blanching solution, blanch Toona sinensis buds in boiling scalding solution for 30 seconds.

Cooling: immediately after blanching, put it into sodium bisulfite solution to cool. In order to accelerate cooling, multiple containers can be used to hold coolant for staged cooling.

Bagging: drain the cooled toon buds and put them into a plastic bag according to 0.5 kg each. The toon buds are arranged neatly at the end and the mouth of the bag is folded.

Quick freezing: the packaged Toona sinensis buds are immediately placed in the freezer, frozen for 24 hours, and then transferred to-18 ℃ for storage. In quick-frozen storage, the flavor quality and color changes of Toona sinensis buds in the bag should be checked frequently in order to sell or deal with them in time.