CN105166296A - Instant bamboo shoot slices and preparation method thereof - Google Patents

Abstract

The invention discloses instant bamboo shoot slices and a preparation method thereof: (1) Cut the bamboo shoots into 5cmX2cmX0.8cm bamboo shoot slices; Soak the bamboo shoots in clean water and rinse; (3) Cook the bamboo shoots in a mixture of white sugar, syrup, vitamin C, citric acid and edible salt for 20-60 minutes, then let them stand for 12-24 hours; (4) The bamboo shoots after standing are baked in a hot-air drying oven at 40-60°C for 2-5 hours. The ready-to-eat bamboo shoot slices of the invention have moderate toughness, good taste, sweet and delicious taste, unique bamboo shoot flavor, convenient eating, and healthy nutrition. The process of the invention is simple in operation, low in cost and easy to realize engineering industrialization.

Description

A kind of instant bamboo shoot slices and preparation method thereof

technical field

The invention relates to bamboo shoot slices and a preparation method thereof, belonging to the field of food deep processing.

Background technique

Bamboo shoots are the tender seedlings of bitter bamboo, light bamboo, moso bamboo, etc. of the grass subfamily bamboo subfamily, also known as bamboo sprouts and bamboo buds. Raw bamboo shoots contain protein, amino acid, fat, sugar, calcium, phosphorus, iron, carotene, vitamin B1, vitamin B2, vitamin C and other ingredients. Bamboo shoots are the young shoots of bamboo, also known as bamboo shoots. Bamboo shoots are native to China, with numerous types, strong adaptability and wide distribution. Bamboo shoots are sweet and slightly cold in nature and have the effects of clearing heat and eliminating phlegm, sharpening the diaphragm and refreshing the stomach, quenching thirst and replenishing qi. Bamboo shoots also contain a lot of cellulose, which can not only promote intestinal peristalsis, remove food accumulation, and prevent constipation, but also a good food for obese people to lose weight. Generally speaking, bamboo shoots have the effects of appetizing and invigorating the spleen, widening the chest and sharpening the diaphragm, clearing the bowel and defecation, opening the diaphragm and eliminating phlegm, and enhancing the body's immunity. Bamboo shoots are suitable for frying, roasting, mixing, cooking, and can also be used as ingredients or stuffing. Bamboo shoots are seldom made into ready-to-eat foods in bags, that is because bamboo shoots have a bitter taste, if only the method of boiling water is used to remove the bitter taste of bamboo shoots, the result is not ideal; Cover up its bitter taste, although it has a certain effect like this, it destroys the original fragrance and sweet local flavor of bamboo shoots. The existing ready-to-eat bamboo shoots on the market also have defects such as low water content, high sweetness, serious loss of nutrients, and loss of the original fragrance and texture of the bamboo shoots.

Contents of the invention

In view of the above deficiencies, the object of the present invention is to provide a kind of bamboo shoot slices without bitterness and astringency, sweet and delicious, elastic and tough texture, high water holding capacity, long shelf life, distinctive flavor and characteristics of bamboo shoots, and a preparation method thereof.

In order to achieve the above object, the present invention adopts the following technical solutions:

A kind of preparation method of instant bamboo shoot slices comprises the following steps:

(1) Material selection:

Choose fresh bamboo shoots with complete shape, tender meat, short internodes and good quality as raw materials;

(2) Preprocessing:

Break the shells of bamboo shoots, peel them off by hand, keep the tips and tender clothes, and then cut them into 5cmX2cmX0.8cm bamboo shoots;

(3) Release from suffering:

Put the bamboo shoots in the debittering solution, boil for 5 minutes to remove the bitterness, soak and rinse the bamboo shoots after debittering;

(4) Candied cooking:

a. According to the ratio of parts by weight: take 5-10 parts of bamboo shoots after debittering, 4-8 parts of white sugar, 4-8 parts of water, 2-4 parts of syrup, 0.01-0.02 parts of vitamin C, citric acid 0.05-0.10 parts, 0.02-0.04 parts of table salt and 0.0025-0.005 parts of potassium sorbate, set aside;

b. above-mentioned white granulated sugar, water, vitamin C, citric acid, salt and Potassium Sorbate are mixed homogeneously to obtain mixed liquor, then the bamboo shoot slices after debittering are boiled in mixed liquor; Keep its slightly boiling state, After cooking for 20 minutes, add the syrup, boil, and stop heating when the sugar content reaches 40% with a sugar meter; continue to stand for 12 to 24 hours;

(5) Drying:

Bake the bamboo shoots after standing at a temperature of 40-60°C for 2-5 hours.

The debittering solution is prepared by mixing peppermint extract, edible salt, citric acid and water in a mass ratio of 2-3:4-8:1-2:500-1000.

The preparation method of the mint extract is as follows: take mint, add 6-10 times the amount of water to decoct 3 times, each time for 1 hour, combine the decoction, concentrate the decoction to a relative density of 1.15-1.20, filter, The filtrate is peppermint extract.

The mass ratio of the bamboo shoot slices to the debittering solution in the step (3) is 1-2:10-20.

The present invention has the following advantages:

1. The preparation method of the present invention adopts mint extract, edible salt and citric acid to compound the original bitterness and astringency of the bamboo shoots through the debittering treatment of the bamboo shoots, and the effect of removing bitterness and astringency is good. The bitter and astringent taste also ensures the complete shape of the bamboo shoots, the delicate and crisp meat, and the characteristics of fragrant and juicy.

Through experimental verification, in the debittering process, if only edible salt, citric acid and water are used to debitterize the bamboo shoots in a mass ratio of 4-8:1-2:500-1000, Its debitter effect is not ideal, and its bitterness is still relatively prominent, but when mint extract, edible salt, citric acid and water are mixed at a mass ratio of 2-3:4-8:1-2:500-1000 The debittering liquid of the bamboo shoots is used to debitterize the bamboo shoots, and the effect of removing bitterness and astringency is excellent. It not only completely removes the bitterness and astringency of the bamboo shoots, but also ensures that the bamboo shoots have the characteristics of complete shape, delicate and crisp meat, and juicy taste. .

2. The preparation method of the present invention adopts compounding of white granulated sugar and syrup, one-time saccharification and dipping, the processing time is short, and the prepared instant bamboo shoots are low in sweetness, sweet and palatable, and have outstanding flavor of bamboo shoots.

3. The preparation method of the present invention controls the water content in the instant bamboo shoot slices by controlling the amount of sugar, saccharification time, and drying temperature and time, so that the prepared instant bamboo shoot slices can be plump, elastic and tough, and can achieve a longer shelf life.

4. The ready-to-eat bamboo shoot slices made in the present invention are novel bamboo shoot leisure food, which are convenient to eat, nutritious and healthy, and conform to the concept of modern people's healthy diet.

Detailed ways

The present invention is specifically described below through examples, and it is necessary to point out that the following examples are only used to further illustrate the present invention, and cannot be construed as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the contents of the present invention described above.

Example 1:

Preparation of instant bamboo shoots:

(1) Material selection:

Choose fresh bamboo shoots with complete shape, tender meat, short internodes and good quality as raw materials;

(2) Preprocessing:

Break the shells of bamboo shoots, peel them off by hand, keep the tips and tender clothes, and then cut them into 5cmX2cmX0.8cm bamboo shoots;

(3) Release from suffering:

Put the bamboo shoots in the debittering solution, boil for 5 minutes to remove the bitterness, soak and rinse the bamboo shoots after debittering; the debittering solution consists of mint extract, edible salt, citric acid and water in a ratio of 3:4:1:500 The mass ratio is mixed. The mass ratio of bamboo shoots and debittering liquid is 1:10. The preparation method of the mint extract is as follows: take mint, add 10 times the amount of water to decoct 3 times, each time for 1 hour, combine the decoction, concentrate the decoction to a relative density of 1.20, filter, and the filtrate is the mint extract .

(4) Candied cooking:

a. According to the ratio of parts by weight: take 5 parts of bamboo shoots after debittering, 4 parts of white sugar, 4 parts of water, 2 parts of syrup, 0.01 part of vitamin C, 0.05 part of citric acid, 0.02 part of salt and potassium sorbate 0.0025 copies, spare;

b. above-mentioned white granulated sugar, water, vitamin C, citric acid, salt and Potassium Sorbate are mixed homogeneously to obtain mixed liquor, then the bamboo shoot slices after debittering are boiled in mixed liquor; Keep its slightly boiling state, After cooking for 20 minutes, add syrup, boil, and stop heating when the sugar content reaches 40% with a sugar meter; continue to stand for 12 hours;

(5) Drying:

Bake the bamboo shoots after standing for 3 hours at a temperature of 45° C., take them out, cool them, and pack them into bags to obtain the finished product.

The prepared ready-to-eat bamboo shoots retain the original color of the bamboo shoots, have low sweetness, are sweet and palatable, and have outstanding flavor of the bamboo shoots. The water content of ready-to-eat bamboo shoots is about 15%. The meat of the bamboo shoots is plump, the texture is elastic and tough, and it can achieve a long shelf life. The shelf life is about 1 year under normal temperature conditions.

Claims (5)

1. a preparation method for instant bamboo shoot sheet, it is characterized in that, the method comprises the following steps:

(1) select materials:

Select that form is complete, fine and tender taste, internode are short, the second best in quality fresh bamboo shoot are raw material;

(2) pretreatment:

Broken bamboo shoot shell, peels off by hand, retains the tender tips of bamboo shoot and tender clothing, is then cut into the bamboo shoot sheet of 5cmX2cmX0.8cm;

(3) debitterize:

Be placed in debitterize liquid by bamboo shoot sheet, boil 5 minutes debitterizes, the bamboo shoot sheet clear water after debitterize soaks rinsing;

(4) candy:

A. count by weight ratio: get the bamboo shoot sheet 5-10 part after debitterize, white granulated sugar 4-8 part, water 4-8 part, syrup 2-4 part, vitamin C 0.01-0.02 part, citric acid 0.05-0.10 part, salt 0.02-0.04 part and potassium sorbate 0.0025-0.005 part, for subsequent use;

B. above-mentioned white granulated sugar, water, vitamin C, citric acid, salt and potassium sorbate are mixed to obtain mixed liquor, and then the bamboo shoot sheet after debitterize is carried out boiling in mixed liquor; Keep its micro-state of boiling, boiling added syrup after 20 minutes, boiled, and reaches 40% namely stop heating by pol measurement liquid glucose pol; Continue to leave standstill 12 ~ 24 hours;

(5) dry:

Bamboo shoot sheet after leaving standstill is dried 2 ~ 5 hours at the temperature of 40 ~ 60 DEG C.

2. the preparation method of instant bamboo shoot sheet as claimed in claim 1, is characterized in that, the mass ratio that described debitterize liquid presses 2-3:4-8:1-2:500-1000 by mint extract, edible salt, citric acid and water mixes obtained.

3. the preparation method of instant bamboo shoot sheet as claimed in claim 2, it is characterized in that, the preparation method of described mint extract is: get peppermint, add the soak by water 3 times of 6-10 times amount, each 1 hour, collecting decoction, decocting liquid being concentrated into relative density is 1.15 ~ 1.20, filter, filtrate is mint extract.

4. the preparation method of instant bamboo shoot sheet as claimed in claim 1, is characterized in that: the mass ratio of described step (3) bamboo shoot sheet and debitterize liquid is 1-2 ︰ 10-20.

5. the instant bamboo shoot sheet as described in claim 1-4 any one obtained by method.