CN103393008B - 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 one amethyst composite rice balanced in nutrition and preparation method thereof.

Background technology

China more than 60% population take rice as staple food, and polished rice vitamin, trace element lack relatively, often eats high polished rice, the symptom such as canker sore that high-precision face causes, increasing " three is high " rich man's disease especially in recent years.Although the nutrition such as brown rice, coarse cereals is abundanter, its palatability is poor, for just rich get up compatriots, the delicious food on the tip of the tongue, aesthetic feeling are yearned for, like eating " essence " and do not eat " rough ", just irresistible as " high mountain and great rivers ".Meanwhile, the crowd of the special dietary demand such as diabetes patient, the elderly, children, pregnant woman suffers from does not have special nutritional to arrange in pairs or groups staple food.Therefore, urgently develop balanced in nutrition, abundant, delicate mouthfeel and meet the independent coarse cereals of people's eating habit or to hold concurrently non-staple foodstuff product based on " delicious food, beauty, U.S. type, nutrition, safety " staple food of rice, flour compound.But because its color and nutrient formulation equilibrium are arranged in pairs or groups and shaping basic theory deficiency, 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, which in turn improves trophic structure simultaneously, the advantage such as possess safety, nutrition, health, save time, and has vast potential for future development.

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

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

(1) all impurity removing abrasive dusts sieve, the fineness of raw meal at 60-120 order, moisture 14-16%;

(2) all raw meal are fully mixed through mixer, add 23 ~ 30% drinkable waters by weight and stir;

(3) through elevator, material is sent into the granulation of squeezing, maturing machine, squeezing, maturing process three sections of temperature controls, the 1st district's temperature 55 ~ 65 DEG C, 2nd district's temperature 118 ~ 125 DEG C, the 3rd district's temperature 65 ~ 75 DEG C, feeding rotating speed 21 ~ 25r/s, engine speed 18 ~ 23r/s, cutter rotating velocity 37 ~ 19r/s;

(4) granulator connects blower, shaping composite rice is sent into multi-deck reciprocating baking oven, bake out temperature 45 ~ 60 DEG C, and after drying, composite rice is moisture is divided into 15% ~ 17%;

(5) sending into polishing machine after drying composite rice Temperature fall to 15 ~ 25 DEG C, to carry out grain of rice surface finish dry again;

(6) after finished product polishing, moisture is to storage requirements 13 ~ 15%, and sieving and grading is packed.

Advantage of the present invention and beneficial effect are:

1, this composite rice adds acetate starch 2 ~ 10 parts, xanthans 0.12 ~ 0.36 part, konjac glucomannan 0.07 ~ 0.29 part, thickener add the boiling character making composite rice have nature rice, which in turn improve trophic structure simultaneously, the advantage such as possess safety, nutrition, health, save time, has vast potential for future development.

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

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

Detailed description of the invention

Below by specific embodiment, the invention will be further described, 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, is made up 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:

(1) various material removal of impurities abrasive dust sieves, the fineness of raw meal at 60-120 order, moisture 14-16%;

(2) various raw meal is fully mixed through mixer, add 23 ~ 30% drinkable waters by weight and stir;

(3) through elevator, material is sent into the granulation of squeezing, maturing machine, squeezing, maturing process three sections of temperature controls, the 1st district's temperature 55 ~ 65 DEG C, 2nd district's temperature 118 ~ 125 DEG C, the 3rd district's temperature 65 ~ 75 DEG C, feeding rotating speed 21 ~ 25r/s, engine speed 18 ~ 23r/s, cutter rotating velocity 37 ~ 19r/s;

(4) granulator connects blower, shaping composite rice is sent into multi-deck reciprocating baking oven, bake out temperature 45 ~ 60 DEG C, and after drying, composite rice is moisture is divided into 15% ~ 17%;

(5) sending into polishing machine after drying composite rice Temperature fall to 15 ~ 25 DEG C, to carry out grain of rice surface finish dry again;

(6) after finished product polishing, moisture is to storage requirements 13 ~ 15%, and sieving and grading is packed.

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, is made up 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.

Preparation method is with embodiment 1.

Embodiment 3

A kind of amethyst composite rice balanced in nutrition, is made up 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.

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 (butt N × 6.25) in defatted soy flour: 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 potato fecula, food-grade, 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 potato acetate starch, food-grade, 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-grade, light brown powder, is slightly with smelly, is dissolved in hot water or cold water.Solution neutral.Chance aqueous dispersion, emulsification become stable hydrophily thick gel, are insoluble to ethanol.

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

Claims (1)

1. an amethyst composite rice balanced in nutrition, is characterized in that: be made up 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:

(1) all impurity removing abrasive dusts sieve, the fineness of raw meal at 60-120 order, moisture 14-16%;

(2) all raw meal are fully mixed through mixer, add 23 ~ 30% drinkable waters by weight and stir;

(3) through elevator, material is sent into the granulation of squeezing, maturing machine, squeezing, maturing process three sections of temperature controls, the 1st district's temperature 55 ~ 65 DEG C, 2nd district's temperature 118 ~ 125 DEG C, the 3rd district's temperature 65 ~ 75 DEG C, feeding rotating speed 21 ~ 25r/s, engine speed 18 ~ 23 r/s, cutter rotating velocity 37 ~ 19 r/s;

(4) granulator connects blower, shaping composite rice is sent into multi-deck reciprocating baking oven, bake out temperature 45 ~ 60 DEG C, and after drying, composite rice is moisture is divided into 15% ~ 17%;

(5) sending into polishing machine behind composite rice Temperature fall to 15 ~ 25 of drying DEG C, to carry out grain of rice surface finish dry again;

(6) after finished product polishing drying, moisture is to storage requirements 13 ~ 15%, and sieving and grading is packed.