CN100559962C - A kind of preparation method of dry water plant powder - Google Patents

A kind of preparation method of dry water plant powder Download PDF

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Publication number
CN100559962C
CN100559962C CNB2007100707934A CN200710070793A CN100559962C CN 100559962 C CN100559962 C CN 100559962C CN B2007100707934 A CNB2007100707934 A CN B2007100707934A CN 200710070793 A CN200710070793 A CN 200710070793A CN 100559962 C CN100559962 C CN 100559962C
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water plant
preparation
plant powder
water
dry
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CN101116986A (en
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叶瑛
夏枚生
胡彩虹
潘依雯
胡秀芳
徐勇
姚志通
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a kind of preparation method of dry water plant powder, it be the fresh water plant that will gather through chopping, blanching complete, permeating and dewatering, slurrying, filtration, oven dry, metering, packing make dry water plant powder; Preparation method's operating condition gentleness of the present invention, energy consumption are little, are easy to realize extensive chemical industry production; Compare with existing dry water plant powder preparation method, the constant product quality that the inventive method makes, and the original local flavor of water plant, color and luster and nutritional quality have been kept, can all or part of alternative corn, vegetable protein such as dregs of beans, alfalfa meal is used for livestock and poultry, aquatic feeds, for feed resource exploitation, solution water pollute practical measures is provided, has good economic and social benefit.

Description

A kind of preparation method of dry water plant powder
Technical field
The present invention relates to water plant recycling field, relate in particular to a kind of preparation method of dry water plant powder.
Background technology
Utilize that high water plant such as water hyacinth, water lettuce and duckweed etc. are harnessed a river, the eutrophication of lake, pond and reservoir is a kind of very fruitful method: the nutriment that high water plants such as (1) water hyacinth, water lettuce and duckweed can absorb in the water body fast in a large number is required for self growth, their root exudates has inhibition or killing action to algae, germ, can effectively suppress growing of harmful algae, germ, improve water quality rapidly; (2) water plant such as some height itself is the plants waterborne with ornamental value, for rivers and lakes increase beautiful sceneries, beautifies the waters view.Comparing with traditional sewage water treatment method, have small investment, advantage of low energy consumption, is a kind of very potential " green " treatment technology.
Yet,, fast growth strong just because of water plant adaptability such as water hyacinth, water lettuce and duckweeds, make biomass form huge accumulation, occupy reservoir, lake, stop up river course, feed ditch, cause The loss of biodiversity, the ecosystem is done great damage, harm agricultural production, water transportation and human health.Particularly water hyacinth overflows in China south, has caused serious economy loss and social danger to some areas.In recent years, the threat that waters such as China Dian Chi, Taihu Lake continue to be subjected to water hyacinth causes significant impact to social economy, people's lives, and it is extremely urgent to administer water hyacinth.
How to give full play to the pollution treatment ability of high water plants such as water hyacinth, water lettuce and duckweed, stop its drawback, key is that it is carried out effective recycling treatment utilization.Method commonly used at present is to salvage the back as garbage loading embeading, but there is very big hidden danger in this processing scheme, because high water plants such as water hyacinth, water lettuce and duckweed contain a large amount of moisture and organic matter, not only can ferment behind the landfill produces great number of flammable gas, but also produces a large amount of percolates and become secondary pollution.
On the other hand, fast development along with China population growth and animal husbandry, the contradiction that people and animals strive grain becomes increasingly conspicuous, current and even long term from now on, China's Developing of Animal Industry will be subjected to the restriction of diet wretched insufficiency, active development utilizes the grain-saving feed resource, is to solve current diet anxiety, quickens the important directions of animal husbandry development.
High water plant nutritional labelings such as water hyacinth, water lettuce and duckweed are abundant, are vegetalitas high-protein feed resources.Reach 19.6%, 26.3%, 17.0% and 19.1% respectively as the contained protein of root, stem, leaf and the petiole of water hyacinth (dry weight), water hyacinth protein contained TEAA surpass paddy, oat, wheat, jowar and cotton seed meal, can match in excellence or beauty with soybean and corn, near the level of cow's milk and concentrated leaf protein; Fat content can reach 0.8%, 1.9%, 3.5% and 2.6% respectively; Contain vitamin B1, B2, B6 and B12 in per kilogram (dry weight) water hyacinth and reach 5.91mg, 30.7mg, 15.2mg and 0.012mg respectively.Therefore, development of resources has very high value to high water plants such as water hyacinth, water lettuce and duckweed as animal feed, not only can alleviate the present feed shortage of resources, also is pollution control of water, and changing harmful to treasure provides practical measures.
Technological difficulties such as there is the accumulating difficulty in the utilization of high water plants such as fresh water cucurbit, water lettuce and duckweed, be easy to rot, existing dry powder of water hyacinth technology of preparing exists to some extent also that the utilization of resources is insufficient, technology is loaded down with trivial details, disposal ability is low, economic benefit is not obvious, is difficult to realize problems such as heavy industrialization processing.Therefore, provide a kind of suitable heavy industrialization to handle the high-efficiency dehydration drying means of water plant resource, when reducing production costs, guarantee the nutritive value that the water plant resource is higher, become main purpose of the present invention.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of dry water plant powder.
The preparation method of dry water plant powder comprises the steps:
1) the fresh water plant chopping that will gather is 0.001~5% at the antioxidant mass percent concentration, and temperature is that blanching completed 0.1~10 minute in 45~100 ℃ the aqueous solution;
2) mass percent concentration be add in 0.1~20% the inorganic or organic salt mass percent concentration that antioxidant and anticorrisive agent be configured to antioxidant be 0.001~5% and the mass percent concentration of anticorrisive agent be 0.001~3% high osmotic pressure solution, above-mentioned water plant after the scalding completes is put in the high osmotic pressure solution, cooling, permeating and dewatering 0.1~10 hour are made slurry with high pressure homogenizer or high-shear emulsion machine again;
3) with step 2) gained slurries filtration or centrifugation, filter cake drying, metering, pack dry water plant powder, filtrate is returned step 2) recycle.
Described water plant is water hyacinth, water lettuce, duckweed, green water cress or water caltrop.Inorganic salts are inorganic sodium, inorganic magnesium salt, inorganic calcium salt, inorganic mantoquita or do not have zinc salt.Organic salt is organic sodium salt, organic magnesium salts, organic calcium salt, organic copper salt or organic zinc salt.Antioxidant is ethoxyquin, di-tert-butyl hydroxy toluene, n-propyl gallate, TBHQ, vitamin C, sodium sulfite, sodium hydrogensulfite or sodium pyrosulfite.Anticorrisive agent is propionic acid, sorbic acid, sodium Diacetate, acetic acid, formic acid or citric acid, benzoic acid or Sodium Benzoate, fumaric acid or dimethyl fumarate.
Advantage of the present invention is that operating condition gentleness, energy consumption are little, compares with existing dry water plant powder technology of preparing, and the constant product quality that makes is easy to realize large-scale industrial production, has good economic and social benefit.
The specific embodiment
The drying of water plant is the combined process of thermal phenomenon, biological and chemical phenomenon, for guaranteeing the quality of product, must consider moisture state, hydro-thermal transport mechanism and influence factor of water plant and the problems such as quality variation in the water plant dry run.
The browning phenomenon of flavescence, browning or blackening can take place at dry run or product duration of storage in water plant, can be divided into two kinds of situations of enzymatic browning and non-enzymatic browning.The preparation method of dry water plant powder of the present invention, it is characterized in that under the protection of antioxidant, complete by blanching and to change the character of water plant cell membrane wall, shorten the time of oven dry, and destroy its oxidase active, reduce the particularly loss of vitamin of nutritional labeling, keep the original local flavor of water plant, color and luster, nutritional quality; Blanching also has the effect of cleaning and killing microorganisms and parasitic ovum concurrently.The preparation method of a kind of dry water plant powder of the present invention; it is characterized in that under the protection of antioxidant; the blanching living plant of treated water that completes is immersed the solution of hyperosmosis; utilize the semipermeability of cell membrane to make intracellular water transport in solution; help subsequent handling and shorten drying time, reduce baking temperature.The preparation method of a kind of dry water plant powder of the present invention, it is characterized in that the living plant of hypertonic solution treated water is pulverized slurrying with high pressure homogenizer or high-shear emulsion machine, increase its surface area on the one hand, can improve the oven dry speed of continuous operation, avoid the high energy consumption of dry material dry pulverization process on the other hand.Filter and the method for oven dry is well-known, filtration can be adopted common filter press, centrifuge or horizontal screw centrifuge, and oven dry can be with artificial drying or air dry.
The present invention is further described in conjunction with following example, but content of the present invention is not limited only to content related among the embodiment.
Embodiment 1:
1) with the fresh water cucurbit chopping of gathering, be 0.001% at the ethoxyquin mass percent concentration, temperature is that blanching completed 0.1 minute in 100 ℃ the aqueous solution;
2) in mass percent concentration is 0.1% sodium chloride solution, add ethoxyquin and propionic acid, the mass percent concentration that makes antioxidant is 0.001% and the mass percent concentration 3% of anticorrisive agent, water hyacinth input that will be after the scalding completes wherein, cooling, permeating and dewatering 10 hours; Use the slurrying in 10 minutes of high pressure homogenizer homogeneous again;
3) with step 2) the gained filter press filters, filter cake with band drier dry to water content less than 15%, through metering, pack dry water plant powder, filtrate is returned step 2) recycle.
Embodiment 2:
1) the fresh water caltrop chopping that will gather is 5% at the di-tert-butyl hydroxy toluene mass percent concentration, and temperature is that blanching completed 10 minutes in 45 ℃ the aqueous solution;
2) in mass percent concentration concentration is 20% SAS, add di-tert-butyl hydroxy toluene and sorbic acid, make the antioxidant mass percent concentration be 5% and the anticorrisive agent mass percent concentration be 0.001%, water hyacinth input that will be after the scalding completes wherein, cooling, permeating and dewatering 10 hours; Use the slurrying in 2 minutes of high-shear emulsion machine homogeneous again;
3) with step 2) the gained filter press filters, filter cake with canal drier dry to water content less than 10%, through metering, pack water caltrop dry powder, filtrate is returned step 2) recycle.
Embodiment 3:
1) with the water lettuce chopping of gathering, be 0.05% in n-propyl gallate concentration, temperature is that blanching completed 2 minutes in 60 ℃ the aqueous solution;
2) in mass percent concentration concentration is 5% calcium chloride water, add n-propyl gallate and benzoic acid, make the antioxidant mass percent concentration be 1% and the anticorrisive agent mass percent concentration be 2%, water lettuce after the scalding completes is dropped into wherein cooling, permeating and dewatering 3 hours; Use the slurrying in 2 minutes of high-shear emulsion machine homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake drying, metering, pack water lettuce dry powder, filtrate is returned step 2) recycle.
Embodiment 4:
1) the fresh duckweed chopping that will gather is 0.5% in TBHQ concentration, and temperature is that blanching completed 8 minutes in 95 ℃ the aqueous solution;
2) in mass percent concentration concentration is 15% the calcium acetate aqueous solution, add TBHQ and Sodium Benzoate, make the antioxidant mass percent concentration be 0.5% and the anticorrisive agent mass percent concentration be 2.5%, duckweed after the scalding completes is dropped into wherein cooling, permeating and dewatering 5 hours; Use the slurrying in 1 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 10% with roller drier, measure, pack duckweed dry powder, filtrate is returned step 2) recycle.
Embodiment 5:
1) the fresh green water cress chopping that will gather is 4% in vitamin C concentration, and temperature is that blanching completed 0.5 minute in 55 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% magnesium chloride brine, add vitamin C and fumaric acid, make the antioxidant mass percent concentration be 0.5% and the anticorrisive agent mass percent concentration be 1.5%, green water cress input that will be after the scalding completes wherein, cooling, permeating and dewatering 1 hour; Use the slurrying in 0.5 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 10% with roller drier, measure, pack green water cress dry powder, filtrate is returned step 2) recycle.
Embodiment 6:
1) with the fresh water cucurbit chopping of gathering, be 3.5% at concentration of sodium sulfite, temperature is that blanching completed 0.8 minute in 75 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% magnesium sulfate solution, add sodium sulfite and dimethyl fumarate, make the antioxidant mass percent concentration be 0.5% and the anticorrisive agent mass percent concentration be 2.5%, water hyacinth input that will be after the scalding completes wherein, cooling, permeating and dewatering 5 hours; Use the slurrying in 1 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 13% with pneumatic drier, measure, pack dry powder of water hyacinth, filtrate is returned step 2) recycle.
Embodiment 7:
1) the fresh duckweed chopping that will gather is 2% at concentration of sodium bisulphite, and temperature is that blanching completed 9 minutes in 55 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% copper chloride solution, add sodium hydrogensulfite and sodium Diacetate, make the antioxidant mass percent concentration be 0.4% and the anticorrisive agent mass percent concentration be 1.5%, water lettuce after the scalding completes is dropped into wherein cooling, permeating and dewatering 5 hours; Use the slurrying in 1 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 10% with roller drier, measure, pack duckweed dry powder, filtrate is returned step 2) recycle.
Embodiment 8:
1) the fresh duckweed chopping that will gather is 0.009% at the pyrosulfurous acid na concn, and temperature is that blanching completed 0.4 minute in 90 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% copper sulfate solution, add sodium pyrosulfite and acetic acid, make the antioxidant mass percent concentration be 4.5% and the anticorrisive agent mass percent concentration be 1.5%, water lettuce after the scalding completes is dropped into wherein cooling, permeating and dewatering 6 hours; Use the slurrying in 1 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 10% with roller drier, measure, pack duckweed dry powder, filtrate is returned step 2) recycle.
Embodiment 9:
1) the fresh water lettuce chopping that will gather is 0.01% at concentration of sodium bisulphite, and temperature is that blanching completed 3 minutes in 80 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% solder(ing)acid, add sodium hydrogensulfite and formic acid, make the antioxidant mass percent concentration be 0.05% and the anticorrisive agent mass percent concentration be 0.5%, water lettuce after the scalding completes is dropped into wherein cooling, permeating and dewatering 8 hours; Use the slurrying in 0.5 minute of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, filter cake is dried to water content less than 10% with roller drier, measure, pack water lettuce dry powder, filtrate is returned step 2) recycle.
Embodiment 10:
1) with the fresh water cucurbit chopping of gathering, be 0.004% in TBHQ concentration, temperature is that blanching completed 6 minutes in 60 ℃ the aqueous solution;
2) in mass percent concentration concentration is 10% zinc acetate aqueous solution, add TBHQ and citric acid, make the antioxidant mass percent concentration be 0.05% and the anticorrisive agent mass percent concentration be 2%, water hyacinth input that will be after the scalding completes wherein, cooling, permeating and dewatering 2 hours; Use the slurrying in 2 minutes of high pressure homogenizer homogeneous again;
3) with step 2) gained filters or centrifugation, the filter cake air dry to water content less than 15%, measure, pack dry powder of water hyacinth, filtrate is returned step 2) recycle.

Claims (8)

1. the preparation method of a dry water plant powder is characterized in that comprising the steps:
1) the fresh water plant chopping that will gather is 0.001~5% at the antioxidant mass percent concentration, and temperature is that blanching completed 0.1~10 minute in 45~100 ℃ the aqueous solution;
2) in mass percent concentration is 0.1~20% inorganic or organic slat solution, add antioxidant and anticorrisive agent, the mass percent concentration that is configured to antioxidant be 0.001~5% and the mass percent concentration of anticorrisive agent be 0.001~3% high osmotic pressure solution, above-mentioned water plant after the scalding completes is put in the high osmotic pressure solution, cooling, permeating and dewatering 0.1~10 hour are made slurry with high pressure homogenizer or high-shear emulsion machine again;
3) with step 2) gained slurries filtration or centrifugation, filter cake drying, metering, pack dry water plant powder, filtrate is returned step 2) recycle.
2. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described water plant is water hyacinth, water lettuce, duckweed, green water cress or water caltrop.
3. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described inorganic salts are inorganic sodium, inorganic magnesium salt, inorganic calcium salt, inorganic mantoquita or do not have zinc salt.
4. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described organic salt is organic sodium salt, organic magnesium salts, organic calcium salt, organic copper salt or organic zinc salt.
5. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described antioxidant is ethoxyquin, di-tert-butyl hydroxy toluene, n-propyl gallate, TBHQ, vitamin C, sodium sulfite, sodium hydrogensulfite or sodium pyrosulfite.
6. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described anticorrisive agent is propionic acid, sorbic acid, sodium Diacetate, acetic acid, formic acid or citric acid.
7. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described anticorrisive agent is benzoic acid or Sodium Benzoate.
8. the preparation method of a kind of dry water plant powder according to claim 1 is characterized in that described anticorrisive agent is fumaric acid or dimethyl fumarate.
CNB2007100707934A 2007-08-14 2007-08-14 A kind of preparation method of dry water plant powder Expired - Fee Related CN100559962C (en)

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