A kind of preparation method of local flavor peanut
Technical field
The present invention relates to a kind of preparation method of local flavor peanut, belong to food processing field.
Background technology
Peanut has very high nutritive value, and protein content reaches about 27.6g/100g, possesses the necessary amino acid of needed by human body eight kinds; Fat content about 45%, its Linoleic acid (can be ARA in human body derivation) content is up to more than 40%; Calcium content reaches as high as 124mg/100g.Also containing the abundant various vitamin such as A, B, E, K in peanut, and lecithin, choline etc.Therefore proverb has the statement of " often eat the health of peanut energy, eaten peanut and do not thought meat or fish " especially, is considered as " Vegetable meat " by modern nutriology man.
As the traditional food that people like, peanut is often used to be processed as leisure snacks, especially fried class local flavor peanut products.But fried peanuts has following defect: 1, high temperature is fried, general oil temperature is more than 140 DEG C.Hot soak condition, can there is chemical reaction in grease, form peroxide, and directly obstruction body is to the absorption of grease and protein; Also carcinogenic substance acrylic amide material can be produced, the nutritive value of reduction in peanut.2, surface is containing a large amount of oil, gives to eat and brings great inconvenience.3, mouthfeel is crisp not.This is because moisture in shelled peanut participates in chemical reaction, changes in conjunction with moisture; 4, the consuming time and tasty deficiency of tasty mode.Commercially available great majority leisure peanut adopts soaking technology tasty mostly, length consuming time and taste only rests on product surface, cannot deep layer tasty.To this, on the basis of existing technology, be necessary to develop a kind of low-temperature frying, crispy in taste, surface substantially without the preparation method of oil, tasty profound local flavor peanut.
Summary of the invention
The object of this invention is to provide a kind of preparation method being suitable for large-scale production, low-temperature frying, surface nothing oil, crispy in taste, the tasty peanut of local flavor thoroughly.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of preparation method of local flavor peanut, comprises the following steps:
1) peanut is carried out drying process, when peanut below moisture 2%-5%, peanut is transported in peeling machine and removes the peel, obtain peanut of peeling;
2) put into baste in vacuum tumbler, the composition of baste comprises (to remove the peel Quality of Peanuts): water 5%-15%, salt 2%-4%, white granulated sugar 1%-3.5%, monosodium glutamate 1%-2.5%, natural flavor 0.5%-4%; Tasty by carrying out in the described decortication peanut feeding vacuum tumbler obtained in step 1), obtain tasty peanut;
3) by step 2) in obtain described tasty peanut to carry out vacuum and low temperature excessively oily, dewatering to peanut water content is less than 3% obtain described dehydration peanut;
4) the described dehydration peanut obtained in step 3) is carried out centrifugation de-oiling packaging, obtain local flavor peanut.
The invention has the beneficial effects as follows: the present invention carries out drying peeling and ratio of adjuvant, tasty by vacuum tumbling rapid deep zone to peanut; Cross oil dehydration in short-term by vacuum and low temperature and keep the mouthfeel that peanut is crisp; Slough peanut surface oil content through traditional vacuum, make it surface without oil; Optimize the technical matters such as tasty not thorough, the surperficial oil-containing of existing peanut, high temperature is fried.
On the basis of technique scheme, the present invention can also do following improvement:
Further, in step 2) in, the temperature 20 DEG C-30 DEG C (normal temperature) that vacuum tumbling is tasty, vacuum 0.08Mpa-0.095Mpa, time 5min-15min;
Further, in step 3), the condition of vacuum low temperature dewatering is vacuum 0.095Mpa-0.098Mpa, oil temperature 90 DEG C-110 DEG C, time 5min-10min;
Further, in step 4), the vacuum 0.095Mpa-0.098Mpa of centrifugation de-oiling, rotating speed 1000rmp-4500rmp, time 3min-5min.
Specific embodiment
Following example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1
1) to select materials removal of impurities: select particle complete, full seed, size is even, without the peanut going mouldy, damage by worms, germinate, and meter 100kg.
2) dry decortication: peanut is carried out drying process, when peanut moisture 2%, peanut is transported in peeling machine and removes the peel;
3) vacuum tumbling is tasty: a, prepare baste: take drinking water 5kg, salt 2kg, white granulated sugar 1kg, monosodium glutamate 1kg, natural flavor 0.5kg according to formula.
B, baste is imported in tumbler, sends into step 2) peanut prepared, closed, arranging vacuum is 0.08Mpa, time 15min.
4) vacuum low-temperature frying: it is less than 3% that the semi-finished product obtained in step 3) are crossed oil dehydration to peanut water content through vacuum and low temperature.The condition of vacuum low-temperature frying is: vacuum 0.095Mp, oil temperature 110 DEG C, time 5min.
5) by the dehydration peanut that obtains in step 4) through traditional vacuum de-oiling, removing peanut surface oil content.Traditional vacuum de-oiling condition is: vacuum 0.095Mpa, rotating speed 4000rmp, time 3min.
6) de-oiling is obtained 5) to be cooled to during room temperature packaging be finished product.
Embodiment 2
1) to select materials removal of impurities: select particle complete, full seed, size is even, without the peanut going mouldy, damage by worms, germinate, and meter 100kg.
2) dry decortication: peanut is carried out drying process, when peanut moisture 5%, peanut is transported in peeling machine and removes the peel;
3) vacuum tumbling is tasty: a, prepare baste: take drinking water 15kg, salt 4kg, white granulated sugar 3.5kg, monosodium glutamate 2.5kg, natural flavor 4kg according to formula.
B, baste is imported in tumbler, sends into step 2) peanut prepared, closed, arranging vacuum is 0.095Mpa, time 5min.
4) vacuum low-temperature frying: it is less than 3% that the semi-finished product obtained in step 3) are crossed oil dehydration to peanut water content through vacuum and low temperature.The condition of vacuum low-temperature frying is: vacuum 0.098Mp, oil temperature 90 DEG C, time 15min.
5) by the dehydration peanut that obtains in step 4) through traditional vacuum de-oiling, removing peanut surface oil content.Traditional vacuum de-oiling condition is: vacuum 0.098Mpa, rotating speed 1000rmp, time 5min.
6) de-oiling is obtained 5) to be cooled to during room temperature packaging be finished product.
Embodiment 3
1) to select materials removal of impurities: select particle complete, full seed, size is even, without the peanut going mouldy, damage by worms, germinate, and meter 100kg.
2) dry decortication: peanut is carried out drying process, when peanut moisture 3%, peanut is transported in peeling machine and removes the peel;
3) vacuum tumbling is tasty: a, prepare baste: take drinking water 10kg, salt 3kg, white granulated sugar 2.5kg, monosodium glutamate 2kg, natural flavor 2kg according to formula.
B, baste is imported in tumbler, sends into step 2) peanut prepared, closed, arranging vacuum is 0.09Mpa, time 12min.
4) vacuum low-temperature frying: it is less than 3% that the semi-finished product obtained in step 3) are crossed oil dehydration to peanut water content through vacuum and low temperature.The condition of vacuum low-temperature frying is: vacuum 0.097Mp, oil temperature 100 DEG C, time 8min.
5) by the dehydration peanut that obtains in step 4) through traditional vacuum de-oiling, removing peanut surface oil content.Traditional vacuum de-oiling condition is: vacuum 0.097Mpa, rotating speed 2500rmp, time 4min.
6) de-oiling is obtained 5) to be cooled to during room temperature packaging be finished product.