Steps for canning oranges:
1, first peel off the orange peel.
2, the water can just not over the orange boil on high heat to turn the heat to cook 5-10 minutes into the appropriate icing sugar according to personal taste when the sugar is best tasted.
3, wait for the cool canning (jars are best without oil and water) in the refrigerator can be kept for about 1 week.
Tangerine flavor sweet and sour, warm, into the lung. The main treatment for the chest septum knot gas, vomiting less food, stomach yin insufficiency, dry thirst in the mouth, lung heat cough and excessive drinking. It has the effect of appetizing, quenching thirst and moistening the lungs. Tangerine nutrition is also very rich, a tangerine will almost meet the body's vitamin C content needed in a day. And oranges contain more than 170 kinds of plant compounds and more than 60 kinds of flavonoids, most of which are natural antioxidants.
Tangerines are often collectively referred to as mandarin oranges along with mandarins, and are brightly colored, sweet and sour, generally orange, but also green or other colors, and are one of the most common fruits in people's lives, with the rinds used in medicine. The rich nutrients in oranges have the effect of lowering blood lipids, anti-atherosclerosis, etc., which is beneficial for the prevention of cardiovascular diseases. Orange juice contains a substance called "Nomilin", which has the ability to inhibit and kill cancer cells, and has a preventive effect on stomach cancer. Tangerines have reddish-orange skin and granular flesh, very similar to grapefruit. Tangerine skin thin meat, juice sweet and sour, peeling orange orange water can overflow.
1, put the orange into the 90 ~ 95 ℃ hot water, hot 45 ~ 60 seconds, and then quickly fish out, peeling while hot. Peeling first at the top of the fruit to tear the skin, and then into two halves. Peel the pulp from the skin, both hands should be gentle, do not make the capsule piece of fat at both ends of the pinch broken;
2, peeled after the orange petals, a piece of a piece of separation, be careful not to peel, you can remove the orange petals on the obvious white "meridian";
3, the separation of the orange petals can be submerged into the room temperature, Concentration of 0.25% hydrochloric acid solution, the time must be according to the changes in the capsule after acid immersion, generally about 30 to 50 minutes. Dip acid effect can make the capsule and juice cells between the pectin material dissolved, so that the expansion of the separation, about dip to the capsule wrinkled and with the juice cells began to be separated state, it can end;
4, take out after rinsing with water, rinse 5 times, and then immersed in room temperature, concentration of 0.75% of the sodium hydroxide solution, immersed in about 5 minutes or less. The function of dipping alkali is to dissolve and flake off the capsular coat, if the concentration of alkali dipped is too large or too long, then it is also able to dissolve the wall of the sap cell, but it will make the sap rupture and the capsular sheet broken. After immersion in alkali, rinse with water, also 5 times, I think, rinse immersion residual alkali. The concentration of hydrochloric acid and sodium hydroxide in the experiment is very low, and after many times of washing, it can be used safely.
5, capsule slices by removing the capsule coat, and then rinsed, while the rinsing pick up, picking off the deformed and broken capsule slices, extraction