Comprehensive utilization method for waste water and fibroid dregs generated from arrowroot production

Abstract

The invention discloses a comprehensive utilization method for waste water and fibroid dregs generated from arrowroot production, and belongs to the technical field of extraction and recycling of plant effective constituent. The method comprises the following steps: the waste water generated from arrowroot production is used for extraction of the fibroid dregs generated from arrowroot production for 1-3 times, wherein the extraction temperature is 40-80 DEG C, and the extraction duration is 1-6 h; the extraction liquid is obtained through separation, is subject to filtration through a micro-filtration membrane, and is condensed through a reverse osmosis membrane until the mass of the concentrate is 0.9-1.1 times of that of the fresh arrowroot; the concentrate is subject to spray drying, so that the puerarin-rich solid regenerant is obtained. According to the embodiment of the invention, in terms of solvent selection, the waste water, rather than an organic solvent, is selected as the solvent to extract the fibroid dregs, so that the recycling cannot cause secondary pollution, the energy consumption is reduced, and meanwhile, the extract can be used directly for food.

Description

technical field

[0001] The invention belongs to the technical field of extraction and recovery of plant effective components, and in particular relates to a comprehensive utilization method of waste water and fibrous waste residue produced by kudzu powder. Background technique

[0002] Pueraria lobata is widely distributed in my country, rich in resources, rich in starch, dietary fiber, flavonoids, polysaccharides, etc. It has many health functions such as nourishing nutrition, beauty and skin care, anti-oxidation, anti-aging, improving osteoporosis, regulating estrogen level, removing garbage in the body, improving circulation, reducing fat and losing weight, regulating blood pressure, etc. It is even more important for caring for women's youth Particularly important.

[0003] In recent years, kudzu starch and kudzu flavonoids have become very popular in domestic and foreign markets, and there are more and more manufacturers producing kudzu powder. The existing kudzu root...

Examples

Embodiment 1

[0047] Take 1 kg of fresh kudzu, remove the rotten part, clean it, chop it up, use about 8 kg of water, squeeze and crush it, add water to wash the powder, filter, put the slurry into the settling tank, settle for 12 hours, separate the mother liquor, and remove sand And with about 3 kilograms of water rinsing sedimentation starch 3 times, sedimentation 3 hours after each rinsing, take out wet starch temperature control 70~80 ℃ of vacuum drying 4 hours, get dry arrowroot starch 190 grams. During the above process, 12 kg of waste water (mother liquor and rinsing liquid) and some fibrous waste residue (about 0.2-0.3 kg) are produced.

[0048] Add the fibrous waste residue to a 20L jacketed glass kettle with agitation, add all 12 kg of waste water, heat the jacketed hot water to a temperature of 50°C in the kettle under stirring, keep it warm for leaching for 1 hour, and filter while it is hot to obtain the filtrate and fiber slag, the fiber slag is rinsed and dried with about 1 ...

Embodiment 2

[0050] Get 2 kilograms of fresh kudzu, carry out the powder operation by embodiment one, get kudzu powder 382 grams, 25 kilograms of waste water and some fibrous waste residues.

[0051] Add fibrous waste residue to a 20L jacketed glass kettle with stirring, add about 12.5 kg of waste water, and under stirring, heat the jacketed hot water to a temperature of 50°C in the kettle, heat preservation and leaching for 2 hours, and centrifuge while it is hot to obtain centrifuge Liquor and fiber slag, the fiber slag is leached once again according to the above conditions, centrifuged, rinsed with an appropriate amount of water and dried for subsequent use. Combine the centrifuge and lotion, and carry out microfiltration, membrane concentration, and spray drying according to Example 1 to obtain 65 grams of solid recovery. The puerarin content was 12% as detected by HPLC, and the recovery rate of puerarin was 0.39%.

Embodiment 3

[0053] Get 3 kilograms of fresh kudzu, carry out the powder operation by embodiment one, get kudzu powder 571 grams, 37 kilograms of waste water and some fibrous waste residues.

[0054] Add fibrous waste residue to a 20L jacketed glass kettle with stirring, add about 12.5 kg of waste water, under stirring, heat the jacketed hot water to a temperature of 50°C in the kettle, heat-preserve and extract for 3 hours, and centrifuge while it is hot to obtain centrifuged Liquor and fiber slag, the fiber slag is leached twice according to the above conditions, centrifuged, rinsed with an appropriate amount of water, and the fiber slag is taken out and dried for later use. The centrifuged liquid and washing liquid were combined, and microfiltration, membrane concentration, and spray drying were carried out according to Example 1 to obtain 102 g of solid recovered product. The puerarin content was 12% as detected by HPLC. The recovery rate of puerarin was 0.41%.

technical field

[0001] The invention belongs to the technical field of extraction and recovery of plant effective components, and in particular relates to a comprehensive utilization method of waste water and fibrous waste residue produced by kudzu powder. Background technique

[0002] Pueraria lobata is widely distributed in my country, rich in resources, rich in starch, dietary fiber, flavonoids, polysaccharides, etc. It has many health functions such as nourishing nutrition, beauty and skin care, anti-oxidation, anti-aging, improving osteoporosis, regulating estrogen level, removing garbage in the body, improving circulation, reducing fat and losing weight, regulating blood pressure, etc. It is even more important for caring for women's youth Particularly important.

[0003] In recent years, kudzu starch and kudzu flavonoids have become very popular in domestic and foreign markets, and there are more and more manufacturers producing kudzu powder. The existing kudzu root...

Examples

Embodiment 1

[0047] Take 1 kg of fresh kudzu, remove the rotten part, clean it, chop it up, use about 8 kg of water, squeeze and crush it, add water to wash the powder, filter, put the slurry into the settling tank, settle for 12 hours, separate the mother liquor, and remove sand And with about 3 kilograms of water rinsing sedimentation starch 3 times, sedimentation 3 hours after each rinsing, take out wet starch temperature control 70~80 ℃ of vacuum drying 4 hours, get dry arrowroot starch 190 grams. During the above process, 12 kg of waste water (mother liquor and rinsing liquid) and some fibrous waste residue (about 0.2-0.3 kg) are produced.

[0048] Add the fibrous waste residue to a 20L jacketed glass kettle with agitation, add all 12 kg of waste water, heat the jacketed hot water to a temperature of 50°C in the kettle under stirring, keep it warm for leaching for 1 hour, and filter while it is hot to obtain the filtrate and fiber slag, the fiber slag is rinsed and dried with about 1 ...

Embodiment 2

[0050] Get 2 kilograms of fresh kudzu, carry out the powder operation by embodiment one, get kudzu powder 382 grams, 25 kilograms of waste water and some fibrous waste residues.

[0051] Add fibrous waste residue to a 20L jacketed glass kettle with stirring, add about 12.5 kg of waste water, and under stirring, heat the jacketed hot water to a temperature of 50°C in the kettle, heat preservation and leaching for 2 hours, and centrifuge while it is hot to obtain centrifuge Liquor and fiber slag, the fiber slag is leached once again according to the above conditions, centrifuged, rinsed with an appropriate amount of water and dried for subsequent use. Combine the centrifuge and lotion, and carry out microfiltration, membrane concentration, and spray drying according to Example 1 to obtain 65 grams of solid recovery. The puerarin content was 12% as detected by HPLC, and the recovery rate of puerarin was 0.39%.

Embodiment 3

[0053] Get 3 kilograms of fresh kudzu, carry out the powder operation by embodiment one, get kudzu powder 571 grams, 37 kilograms of waste water and some fibrous waste residues.

[0054] Add fibrous waste residue to a 20L jacketed glass kettle with stirring, add about 12.5 kg of waste water, under stirring, heat the jacketed hot water to a temperature of 50°C in the kettle, heat-preserve and extract for 3 hours, and centrifuge while it is hot to obtain centrifuged Liquor and fiber slag, the fiber slag is leached twice according to the above conditions, centrifuged, rinsed with an appropriate amount of water, and the fiber slag is taken out and dried for later use. The centrifuged liquid and washing liquid were combined, and microfiltration, membrane concentration, and spray drying were carried out according to Example 1 to obtain 102 g of solid recovered product. The puerarin content was 12% as detected by HPLC. The recovery rate of puerarin was 0.41%.

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