CN100421584C - Method for processing nutrient elements of black currant - Google Patents

Abstract

The present invention relates to a processing method for black currant nutriment which is powdery fruit juice powders prepared from black currant fruit juice by vacuum freeze drying. The present invention has the following steps that black currant is broken, degummed by adding pectase and squeezed into fruit juice; the fruit juice is clarified, filtered and concentrated; the concentrated fruit juice is packed by vacuum, frozen and dried at low temperature; finally, a finished product is taken out of a box and packed; after test qualification, the finished product is warehoused.

Description

The processing method of nutrient elements of black currant

Technical field

The present invention relates to a kind of processing method of nutrient elements of black currant, relate in particular to a kind of method of making the powdery dried fruit juice with black currant juice through vacuum freeze drying.

Background technology

Elements of black currant, it is black currant, be one of four universally acknowledged big wild acinus, belong to the peculiar wild acinus in frigid zone. show according to China prevention academy of sciences Ins of Nutrition ﹠ Food Hygiene and Tianjin Food Hygiene Surveillance check institute testing result, the nutrition of elements of black currant is comprehensive and fragrance is unique, its calcium content is the highest among the various fruit, ascorbic content is up to 100-400mg/100g, it is apple, peach, several times of content of grape even hundreds of times, the bioflavonoid that contains have the body immunity of enhancing and delay senility, reducing blood lipid, improve artery sclerosis and anti-cancer, anticancer effect.

Elements of black currant fruit circle; approximately has only size as two soya beans; fruit is less and tart flavour is very heavy; not anti-normal temperature is stored down; can not the direct marketing fruit. the application of elements of black currant is had only squeezing juice all the time; make inspissated juice; be stored in the low-temperature cold store with vacuum packaging; making various drinks etc. then is sold to people and drinks. and the problem of existence is that to sell transportation volume huge; and the taste that has so often limited many people is selected. can have and a kind ofly can reduce selling charges; more can satisfy the drink of numerous clients' autonomous consumption custom, become the problem of our research.

Present each international and domestic producer, the unmanned nutrient elements of black currant of producing. in this case, succeeded in developing nutrient elements of black currant finally through our effort.

Summary of the invention

The purpose of this invention is to provide a kind of powdery dried fruit juice made from elements of black currant, the nutritional labeling that it can protect fruit juice to greatest extent satisfies client's different taste simultaneously and selects, and also is convenient to storage, transportation and sale, thereby reduces cost greatly.

Therefore, the invention provides a kind of processing method of nutrient elements of black currant, may further comprise the steps:

(1) elements of black currant really carries out break process and adds the pectase that percentage by weight is 0.1-0.7, and temperature rises to 45 ℃, and usually time is to come unstuck in 2-10 hour;

(2) press juice leaves standstill and clarified in 3-7 hour, fruit juice once filtered and secondary filter with vacuum filter and filter paper machine respectively, and the fruit juice behind the thickening filtration;

(3) fruit juice after check concentrates is gone into freezer after qualified and is preserved stand-by;

(4) with the elements of black currant inspissated juice that is up to the standards, in lyophilizer, to carry out heat drying and handle the acquisition finished product, subzero 60 degree of 20-, vacuum are 50-75pa under the zero temperature in the described lyophilizer.

The present invention also provides a kind of processing method of nutrient elements of black currant, wherein the elements of black currant inspissated juice is carried out average and handles.

Description of drawings

Accompanying drawing 1 is an elements of black currant flour producing process flow chart.

The specific embodiment

The processing technology of nutrient elements of black currant is as follows: with blackcurrant (elements of black currant) fresh fruit of plucking, qualified by inspection after, carry out break process; Be warmed up to 45 ℃, add the pectase processing of coming unstuck, the percentage by weight of pectase addition is 0.1-0.7, and usually time is 2-10 hour.Carry out press juice then, the fruit juice after the squeezing will be squeezed into settling tank and leave standstill clarification in 3-7 hour.Once filter with vacuum filter the clarification back; Carry out the secondary filtering after the assay was approved with the filter paper machine again, carry out sterilization with triple effect concentration of juices unit and concentrate, vacuum packaging is carried out with aluminium plastic bag in qualified back, and is stand-by through going into 4 ℃ of preservations of freezer low temperature after the assay was approved.

The elements of black currant inspissated juice that is up to the standards is carried out average handle, guarantee that the concentrated dry matter content of the concentration of product is 40-80 weight %.The elements of black currant inspissated juice is packed in the lyophilizer baking tray, every dish charge weight 0.1-3.0kg. starts the freezing unit of interlayer, bed temperature is reduced to-below the 20--60 degree, start the vacuum unit, after being evacuated to 50-75pa. and treating that above-mentioned condition all reaches, start the carrier heating system and carry out drying, every 1 hour heating carrier product is heated, heat up is no more than the 4-8 degree at every turn.

Aforesaid operations lasts 24 hours, and this moment, whole manufacturing procedure finished, and can go out case packing, after the assay was approved warehouse-in.

The elements of black currant dried fruit juice that adopts processing method of the present invention to produce; through check; find that the nutritional labeling in the elements of black currant fruit has all been kept preferably. well-known; ascorbic processing conditions requires the harshest; if its processing conditions heating is above 50 ℃; will make vitamin loss in the last fruit juice serious even reduce to zero. through check; ascorbic content is 164.6mg in the original elements of black currant inspissated juice of every 100g; and adopt after the processing method of the present invention; ascorbic content is 121mg in every 100g elements of black currant dried fruit juice of making; therefore lose considerably lessly, protected the nutritional labeling in the fruit juice to greatest extent.

Claims (2)

1. the processing method of a black steady gooseberry nutrient is characterized in that may further comprise the steps:

(1) elements of black currant really carries out break process and adds the pectase that percentage by weight is 0.1-0.7, and temperature rises to 45 ℃, and usually time is to come unstuck in 2-10 hour;

(2) press juice leaves standstill and clarified in 3-7 hour, fruit juice once filtered and secondary filter with vacuum filter and filter paper machine respectively, and the fruit juice behind the thickening filtration;

(3) fruit juice after check concentrates is gone into freezer after qualified and is preserved stand-by;

(4) with the elements of black currant inspissated juice that is up to the standards, in lyophilizer, to carry out heat drying and handle the acquisition finished product, subzero 60 degree of 20-, vacuum are 50-75pa under the zero temperature in the described lyophilizer.

2. processing method as claimed in claim 1 is characterized in that before carrying out the drying processing elements of black currant inspissated juice being carried out average handles.

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