CN103393008A - Nutrition-equalized purple crystal composite rice and preparation method thereof - Google Patents

Abstract

The invention relates to nutrition-equalized purple crystal composite rice and a preparation method thereof. The nutrition-equalized purple crystal composite rice contains the following raw materials: 35-55 parts of rice flour, 12-30 parts of degreased soybean flour, 5-15 parts of sweet rice flour, 5-12 parts of wheat flour, 2-10 parts of potato starch, 12-23 parts of purple potato powder, 2-10 parts of acetate starch, 0.12-0.36 parts of xanthan gum, and 0.07-0.29 parts of konjak gum. The preparation method comprises the following steps of: milling and sieving the raw materials, and mixing the materials in proportion; (2) fully and uniformly stirring with a proper amount of water based on a mass ratio; (3) conveying the mixture into a composite rice extruding and slaking machine; (4) preparing rice grain-shaped composite rice through forming and shearing after three-stage temperature-controlled extruding and slaking by the composite rice extruding and slaking machine; (5) sending the formed composite rice into a multi-layer reciprocating type baking oven by a blower, and drying at a low temperature; (6) polishing the finished product, and then drying; and (7) screening, grading and packaging. The nutrition-equalized purple crystal composite rice and the preparation method thereof have advantages of simple technology, rapidness and abundant nutrition. The finished product is good in color, aroma and taste, just like the high-quality natural rice.

Description

A kind of amethyst composite rice balanced in nutrition and preparation method thereof

Technical field

The invention belongs to food processing technology field, particularly a kind of amethyst composite rice balanced in nutrition and preparation method thereof.

Background technology

The above population of China 60% is take rice as staple food, and polished rice vitamin, trace element lack relatively, often eats the symptoms such as canker sore that high polished rice, high-precision face cause, especially in recent years increasing " three height " rich man's disease.Although the nutrition such as brown rice, coarse cereals is abundanter, its palatability is poor, for rich compatriots that get up just, for the delicious food on the tip of the tongue, aesthetic feeling, yearns for, and likes eating " essence " and does not eat " rough ", and is just irresistible as " high mountain and great rivers ".Simultaneously, the crowd of the special dietary demands such as diabetes patient, the elderly, children, pregnant woman suffers from does not have special nutritional collocation staple food.Therefore, urgently develop balanced in nutrition, abundant, delicate mouthfeel and meet the independent coarse cereals of people's eating habit or based on rice, compound " delicious food, beauty, U.S. type, nutrition, the safety " staple food of flour non-staple foodstuff product of holding concurrently.But due to its color and the balanced collocation of nutrient formulation and moulding basic theory deficiency thereof, existing market nutritional composite rice ubiquity viscoplasticity, Maillard reaction brown stain are difficult to the problems such as regulation and control.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art part, a kind of amethyst composite rice balanced in nutrition and preparation method thereof is provided.This composite rice has the boiling character of nature rice, has simultaneously improved again trophic structure, and the advantage such as possess safety, nutrition, health, save time has vast potential for future development.

The present invention realizes that the technical scheme of purpose is as follows:

A kind of amethyst composite rice balanced in nutrition is comprised of the raw material of following parts by weight:

Rice meal 35～55, defatted soy flour 12～30, glutinous rice flour 5～15, wheat flour 5～12, farina 2～10, purple sweet potato powder 12～23, acetate starch 2～10, xanthans 0.12～0.36, konjac glucomannan 0.07～0.29.

And, thick protein (butt N * 6.25): 50.0%-60% in defatted soy flour in described defatted soy flour, moisture content≤7%, crude fat (butt) :≤1.0%, ash content (butt) :≤6.5%, water conservation, guarantor's oil: 1:2.5:2.5, pH value 7.0 ± 0.5.

A kind of preparation method of amethyst composite rice balanced in nutrition, step is as follows:

⑴ all impurity removing abrasive dusts sieve, and the fineness of raw meal is at 60-120 order, moisture 14-16%;

⑵ fully mix all raw meal through mixer, adds by weight 23～30% drinkable waters to stir;

⑶ send material into the granulation of squeezing, maturing machine through elevator, three sections temperature controls of squeezing, maturing process, the 1st 55～65 ℃ of district's temperature, the 2nd 118～125 ℃ of district's temperature, the 3rd 65～75 ℃ of district's temperature, feeding rotating speed 21～25r/s, engine speed 18～23r/s, cutting knife rotating speed 37～19r/s;

⑷ granulator connects blower, and the moulding composite rice is sent into to the multi-deck reciprocating baking oven, 45～60 ℃ of bake out temperatures, and after oven dry, composite rice is moisture is divided into 15%～17%;

⑸ dried after composite rice is cooled to 15～25 ℃ naturally and send into polishing machine to carry out grain of rice surface finish dry again;

⑹ after finished product polishing, moisture requires 13～15% to storage, the sieving and grading packing.

Advantage of the present invention and beneficial effect are:

1, this composite rice adds 2～10 parts of acetate starch, 0.12～0.36 part of xanthans, 0.07～0.29 part of konjac glucomannan, adding of thickener makes composite rice have the boiling character of nature rice, improved again simultaneously trophic structure, the advantage such as possess safety, nutrition, health, save time, have vast potential for future development.

2, the present invention has added 12～23 parts of purple sweet potato powders in composition, can effectively improve color and luster and the mouthfeel of rice, increases application and the sight of composite rice.

3, the present invention is take nutrition arrangement and forming technique as basis, in the new formula of design, added the amethyst nutritional composite rice a kind of balanced in nutrition of " defatted soy flour ", the exploitation that protein content is higher " nutrient safe, color, smell and taste good, meet eating habit ".

The specific embodiment

The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.

Embodiment 1

A kind of amethyst composite rice balanced in nutrition, be comprised of the raw material of following parts by weight,

Rice meal 35～55, defatted soy flour 12～30, glutinous rice flour 5～15, wheat flour 5～12, farina 2～10, purple sweet potato powder 12～23, acetate starch 2～10, xanthans 0.12～0.36, konjac glucomannan 0.07～0.29.

The step of preparation method is as follows:

⑴ various material removal of impurities abrasive dust sieves, and the fineness of raw meal is at 60-120 order, moisture 14-16%;

⑵ fully mix various raw meal through mixer, adds by weight 23～30% drinkable waters to stir;

⑶ send material into the granulation of squeezing, maturing machine through elevator, three sections temperature controls of squeezing, maturing process, the 1st 55～65 ℃ of district's temperature, the 2nd 118～125 ℃ of district's temperature, the 3rd 65～75 ℃ of district's temperature, feeding rotating speed 21～25r/s, engine speed 18～23r/s, cutting knife rotating speed 37～19r/s;

⑷ granulator connects blower, and the moulding composite rice is sent into to the multi-deck reciprocating baking oven, 45～60 ℃ of bake out temperatures, and after oven dry, composite rice is moisture is divided into 15%～17%;

⑸ dried after composite rice is cooled to 15～25 ℃ naturally and send into polishing machine to carry out grain of rice surface finish dry again;

⑹ after finished product polishing, moisture requires 13～15% to storage, the sieving and grading packing.

Natural Se content: 2.3-4.5ppm in every 100g amethyst rice prepared by the present embodiment.

Embodiment 2

A kind of amethyst composite rice balanced in nutrition, be comprised of the raw material of following parts by weight,

Rice meal 35, defatted soy flour 12, glutinous rice flour 5, wheat flour 5, farina 2, purple sweet potato powder 12, acetate starch 2, xanthans 0.12, konjac glucomannan 0.07.

The preparation method is with embodiment 1.

Embodiment 3

A kind of amethyst composite rice balanced in nutrition, be comprised of the raw material of following parts by weight,

Rice meal 55, defatted soy flour 30, glutinous rice flour 15, wheat flour 12, farina 10, purple sweet potato powder 23, acetate starch 10, xanthans 0.36, konjac glucomannan 0.29.

The preparation method is with embodiment 1.

Raw material of the present invention is described below, and is commercially available prod.

Rice meal: amylose content is 16.8%～21.1%.

Defatted soy flour: thick protein in defatted soy flour (butt N * 6.25): 50.0%～60%, moisture content≤7%, crude fat (butt) :≤1.0%, ash content (butt) :≤6.5%, water conservation, guarantor's oil: 1:2.5:2.5, pH value 7.0 ± 0.5.

Glutinous rice flour amylopectin content >=98.24%.

Wheat flour is second clear flour, and protein content is 13-14%.

Farina is the potato fecula, food stage, moisture 18.00-20.00%, fiber content≤2.0%, PH6.0-8.0, electrical conductivity (us/cm)≤100, whiteness >=92.0(457nm blue emission rate), fineness >=99.90%(100 mesh sieve percent of pass), peak viscosity >=1300(BU), content in protein≤0.10%(dry), ash content≤0.30%, lead≤0.50(is in Pb), coliform≤30MPN/100g.

Purple sweet potato powder is the full powder of purple potato, and purple potato kind is No. 6, capital potato.

Acetate starch is the potato acetate starch, food stage, and acetate starch >=99%, DS >=0.06, esterifying agent is aceticanhydride, moisture<14%, PH5.0-7.0, viscosity>700BU, ash content<0.3, whiteness>93MIN, heavy metal<10PPM.

Xanthans, food stage, light brown powder, slightly be with smellyly, is dissolved in the hot water or cold water.Solution neutral.Chance aqueous dispersion, emulsification become stable hydrophily thickness colloid, are insoluble to ethanol.

Konjac glucomannan, Shui Fen>=12%, Nian Du>=22000(mPa.s), the sweet Ju Tang of Pu>=75%, sulfur dioxide≤4.0g.

Claims (3)

1. amethyst composite rice balanced in nutrition, it is characterized in that: the raw material by following parts by weight forms:

Rice meal 35～55, defatted soy flour 12～30, glutinous rice flour 5～15, wheat flour 5～12, farina 2～10, purple sweet potato powder 12～23, acetate starch 2～10, xanthans 0.12～0.36, konjac glucomannan 0.07～0.29.

2. amethyst composite rice balanced in nutrition according to claim 1, it is characterized in that: thick protein butt N * 6.25:50.0%-60% in defatted soy flour in described defatted soy flour, moisture content≤7%, crude fat butt :≤1.0%, ash content butt :≤6.5%, water conservation, guarantor's oil: 1:2.5:2.5, pH value 7.0 ± 0.5.

3. the preparation method of an amethyst composite rice balanced in nutrition as claimed in claim 1, it is characterized in that: step is as follows:

⑴ all impurity removing abrasive dusts sieve, and the fineness of raw meal is at 60-120 order, moisture 14-16%;

⑵ fully mix all raw meal through mixer, adds by weight 23～30% drinkable waters to stir;

⑶ send material into the granulation of squeezing, maturing machine through elevator, three sections temperature controls of squeezing, maturing process, the 1st 55～65 ℃ of district's temperature, the 2nd 118～125 ℃ of district's temperature, the 3rd 65～75 ℃ of district's temperature, feeding rotating speed 21～25r/s, engine speed 18～23r/s, cutting knife rotating speed 37～19r/s;

⑷ granulator connects blower, and the moulding composite rice is sent into to the multi-deck reciprocating baking oven, 45～60 ℃ of bake out temperatures, and after oven dry, composite rice is moisture is divided into 15%～17%;

⑸ dried after composite rice is cooled to 15～25 ℃ naturally and send into polishing machine to carry out grain of rice surface finish dry again;

⑹ after finished product polishing, moisture requires 13～15% to storage, the sieving and grading packing.