Background technology
Along with growth in the living standard, people not only pay attention to the taste of food, pay attention to the nutrition and the healthy functions of food more.The development and application of the fruit drink of therefore nutrition, health is expanded rapidly.The output of fruit juice and vegetable juice and consumption figure have obtained increasing substantially.Various fruit juice are a feast for the eyes on the market, and the flavor enhancement of fruit juice, fragrance, outward appearance and mouthfeel more and more receive consumer's concern.
On the other hand, because the consumer notices more and more that to their caloric intake people more and more are concerned about the intake of their sugar every day.How, the consumer to become the new demand of beverage market for providing a kind of calorie of lower fruit juice.
It is the strong sweet substance of glucoside S-5 that Momordica grosvenori contains 1% triterpene, its sugariness is equivalent to 300 times of sucrose, much sweeter than Stevioside and glycyrrhizin, and there is not a bitter peculiar smell of Stevioside, this strong sweet substance flavor is sweet and pure, free from extraneous odour, aftertaste sense are strong, thermally-stabilised good, and be stable in 100 ℃ of aqueous solution, 120 ℃ continuously heating still be not destroyed more than 12 hours.Belong to non-fermented material, be beneficial to processing and store.Japan bamboo professor Ben Changsong studies supposition, and this material has the effect of treatment cancer.
The Vit C contents of Momordica grosvenori is very abundant, it is 319-510mg that every according to surveying and determination 100g fresh fructus momordicae contains vitamin C, all exceed tens times to tens times than citrus, banana, pakchoi etc., more taller than the Kiwi berry (every 100g contains vitamin 100-420mg) that present domestic generally acknowledged vitamin content is higher.
Momordica grosvenori contains treatment coronary heart disease and prevention comparatively ideal oleic acid of vascular sclerosis and linoleic acid composition.
Momordica grosvenori contains 17 seed amino acids.Contain 16 kinds of inorganic microelements such as selenium again.Modern medicine proof selenium coronary heart disease is controlled, anti-ageing, anticancer aspect is all effective in cure.
Because the vegetables that are difficult for discovering in storage problem and fruit flavor is easy to become peculiar smell, generally seldom uses fresh Lo Han Guo fruit.
The nutritive value that how fully to keep Momordica grosvenori is prepared into a kind of juice drinks that extensively gets consumer reception and favor with Momordica grosvenori, becomes the new research direction of Momordica grosvenori manufacturer.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the existing high defective of fruit juice sugar content, the preparation method of grosvenor momordica fruit juice is provided, the inventive method raw material sources are extensive, the preparation method is simple, with low cost, the fruit juice nutrient that makes is abundant, and sugar content is low, the sugariness height is suitable for various drunk by people.
For addressing the above problem, the present invention adopts following technical scheme:
Method for preparing grosvenor momordica fruit juice of the present invention, it comprises that three centrifugal filtration separates, merges the fruit juice of three separation, removes bitter substance, plate compression, micro-pore-film filtration, concentration step.
Particularly, the inventive method comprises the following steps:
A, centrifugal filtration separate fruit juice 1 and pomace;
B, with pomace once more centrifugal filtration separate fruit juice 2 and centrifugal slag;
C, with the centrifugal slag of step B gained once more centrifugal filtration separate fruit juice 3 and pomace;
The fruit juice 1,2,3 of D, combining step A, B, C gained gets blended fruit juice;
E, with 30 minutes protein precipitations of blended fruit juice ebuillition of heated and remove bitter substance;
F, plate compression;
G, micro-pore-film filtration;
H, nanofiltration concentrate,
I, cryogenic vacuum concentrate.
The inventive method also is included in before the steps A centrifugal filtration to be cleaned, pours in the boiling water immediately after the fragmentation the Momordica grosvenori fresh fruit.
Adding citric acid accent ph value when the inventive method is cooled to 30-40 ℃ with steps A gained fruit juice 1 is 4.0-4.3, and insulation 40-80min adds pectase under 30-40 ℃ of temperature.
Preferably, adding citric acid accent ph value when the inventive method is cooled to 50 ℃ with steps A gained fruit juice 1 is 4.2, and insulation 60min adds pectase under 50 ℃ of temperature.
The pomace that the inventive method is separated steps A adds 40-80 ℃ of hot water, extracts 40-80min under 40-80 ℃ of temperature.
Preferably, the pomace that the inventive method is separated steps A adds 60 ℃ of hot water, extracts 60min under 60 ℃ of temperature.
The inventive method adds 40-80 ℃ of hot water with the centrifugal slag of step B preparation, at 40-80 ℃ of lixiviate 20-40min.
Preferably, the inventive method adds 60 ℃ of hot water, lixiviate 30min under 60 ℃ of temperature with the centrifugal slag of step B preparation.
The inventive method adds activated carbon in step e, boiling 30min, protein precipitation and remove the off-flavor precursors material.
After the inventive method step e fruit juice is cooled to the press filtration of 50 ℃ of laggard andante frames.
Membrane filtration behind adding anticorrisive agent three potassium sorbates among the inventive method step G, described microporous barrier aperture is 0.1~0.5um.
The inventive method step H nanofiltration is concentrated into fruit juice pol Brix and equals 15-25%.
Preferably, the inventive method step H nanofiltration is concentrated into fruit juice pol Brix and equals 20%.
The temperature that the inventive method step I cryogenic vacuum concentrates is lower than 60 ℃, is concentrated into fruit juice pol Brix and equals 40-80%.
Preferably, the temperature that the inventive method step I cryogenic vacuum concentrates is lower than 60 ℃, is concentrated into fruit juice pol Brix and equals 60%.
Grosvenor momordica fruit juice of the present invention consists of with dry weight forms calculating, the sugar of 40%-60%, for example: glucose, fructose and sucrose; The protein of 0%-25% (comprising free amino acid and/or peptide); The fat of 0%-4%; The ash content of 1%-6%; The organic acid of 5%-20%, for example: citric acid and malic acid; The Vitamin C of 0%-2%; Other material of 0%-10%.
Momordica grosvenori claims LAHANGUO, balloonvine heartseed herb, tamarind, Semen Momordicae etc. again, formal name used at school is Momordica Grosvenori Swingla or Sairaitia Grosvenori Swingla, be 1 year kind, the Curcurbitaceae of Shouing (Cucurbitaceae) liana deciduous plant for many years.
The Momordica grosvenori nutritive value is abundant, and its dry fruit contains protein, 18 seed amino acids, and wherein 8 kinds is the human body essential amino acid.Ripening fruits contains 24 kinds of inorganic elements, and wherein the trace element of needed by human is 16 kinds.Momordica grosvenori contains abundant vitamin C, and content reaches 33.9%~44.1%, and wherein Vit C contents is high especially, can match in excellence or beauty with Kiwi berry.Momordica grosvenori also contains linoleic acid, oleic acid, palmitic acid, stearic acid, palm fibre puts multiple aliphatic acid such as olefin(e) acid, myristic acid, capric acid, laurate.
Momordica grosvenori contains a large amount of triterpenes glycoside compounds, as Momordia grosvenori aglycone IIE, III, IIIE, IV, V and VI, momordica grosvenori alcohol, Simon glycosides I, 11-carbonyl momordica grosvenori glycoside V, the new glycosides of Momordica grosvenori, wherein the momordica grosvenori glycoside V of ten thousand/concentration and Simon glycosides I sugariness are equivalent to 300 times of 5% sucrose and 563 times respectively, are good natural low heat energy sweeteners.Momordica grosvenori glycoside V content in fresh fruit is 0.5%, is 4%~5% in the dry fruit.Momordica grosvenori also contains flavone compound, as grosvenorin, and Kaempferol-3,7-α-L-two rhamnosides.
Momordica grosvenori has treatment pertussis, phlegm-fire cough, the dry constipation of blood, and acute and chronic bronchitis and tonsillitis promote multiple efficacies such as functions of intestines and stomach.Modern medicine proves, also contain multiple scavenger (cleanser) material in the Momordica grosvenori, can remove the active oxygen in the human body effectively, so can prevent and treat and cancer that supplemental treatment is caused by free radical, hypertension, physiological pain, climacteric obstacle, cataract, gastritis, ulcer, constipation, eczema, pellagra or the like.In addition, Momordica grosvenori contains treatment coronary heart disease and angiosclerotic oleic acid of prevention and linoleic acid etc.Momordica grosvenori has also contained the composition of scavenger effect, by taking or put on the skin elimination lipofuscin (freckle, foxiness etc.) orally outward.Also can be used for bathing with the lipid peroxide in purifying the blood, improve whole skin metabolism.There is report to say that Momordica grosvenori also can be used for the treatment of acne, obesity and fash alopecia.
The grosvenor momordica fruit juice of the inventive method preparation has kept the natural nutrient component of Momordica grosvenori, has removed the peculiar smell of Momordica grosvenori, the sugariness height, and sugar content is low, is fit to various consumers, is specially adapted to patients such as diabetes and hypertension.
The specific embodiment
As shown in Figure 1, the preparation method of grosvenor momordica fruit juice of the present invention comprises the following steps:
A, the Momordica grosvenori fresh fruit is cleaned up with pure water, pours into immediately after the fragmentation in the boiling water, centrifugal filtration separate fruit juice 1 and pomace; It is 4.2 that fruit juice 1 is cooled to 50 ℃ of adding citric acids adjusting pH values, adds pectase and be incubated 60min under 50 ℃ of temperature;
B, steps A gained pomace is added 60 ℃ hot water, extract 60min under 60 ℃ of temperature, centrifugal filtration gets fruit juice 2 and centrifugal slag;
C, the centrifugal slag of step B gained is added 60 ℃ of hot water, lixiviate 30min centrifugal filtration gets fruit juice 3 under 60 ℃ of temperature;
D, blended fruit juice 1,2,3;
E, the blended fruit juice of step D is added activated carbon boiling 30min, protein precipitation removes the off-flavor precursors material;
F, the blended fruit juice of step e is cooled to 50 ℃ carries out plate compression;
Carry out the micro-pore-film filtration of 0.5um behind G, adding anticorrisive agent three potassium sorbates again;
H, nanofiltration are concentrated into fruit juice pol Brix and equal 20%; ,
J, be lower than 60 ℃ of cryogenic vacuums and be concentrated into fruit juice pol Brix and equal 60%;
K, pasteurization, aseptic packaging.