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Vegetable condensed juice prepared using vegetable leaf and preparation method thereof

A technology of concentrated juice and vegetable leaves, applied in the field of concentrated vegetable juice and its preparation, can solve the problems of resource waste, environmental pollution, etc., and achieve the effects of less loss, good taste and good stability

Inactive Publication Date: 2008-05-21
NANJING WILD PANT COMPREHENSIVE UTILIZATION INST THE ALL CHINA SUPPLY & MARKETING COOPERATIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Every year in my country, a large amount of broccoli and cabbage are harvested and the outer leaves are discarded, about 1500-2000 kg per mu, which not only causes waste of resources but also pollutes the environment

Method used

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  • Vegetable condensed juice prepared using vegetable leaf and preparation method thereof
  • Vegetable condensed juice prepared using vegetable leaf and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Broccoli leaf juice and concentrated juice preparation:

[0045] Pretreatment of broccoli leaves: prefreezing for 3 hours at -5°C to -18°C, then thawing;

[0046] The thawed broccoli leaves were squeezed with a centrifugal juicer, and the obtained juice was centrifuged at 3000 rpm for 15 minutes, and the obtained supernatant was analyzed for physical and chemical indicators and sensory indicators (Table 1).

[0047] Table 1 Effect of pretreatment on broccoli leaf juice yield and its physical and chemical indicators

[0048] preprocessing

Way

Juice yield

(%)

Soluble solids

(%)

titrated acid

(%)

total sugar content

(%)

Vc content

(%)

sensory index

freeze thaw

30.61

6.3

0.14

2.46

0.044

Greenish brown, less suspended solids,

opaque

[0049] Cut 500 grams of broccoli leaves th...

Embodiment 2

[0066] Embodiment 2: the preparation of sodium copper chlorophyllin or sodium zinc chlorophyllin:

[0067] The process flow is: chlorophyll→saponification→acidification→copper (zinc) generation→suction filtration and washing→dissolving into salt→suction filtration→washing→vacuum drying→finished product.

[0068] The specific implementation steps are as follows:

[0069] Get the broccoli leaf in Example 1 through squeezing the juice, filtering, centrifuging and gaining waste (residue, precipitation), extract with 95% ethanol, extraction time 2hr; Solid-liquid ratio is 1: 6 by volume, and extraction temperature is 50-70°C, extract and filter to remove residues, concentrate the filtrate under reduced pressure at 50-60°C to obtain chlorophyll concentrate (or chlorophyll extract), and purify to obtain chlorophyll.

[0070] The obtained chlorophyll (or chlorophyll concentrate or chlorophyll extract) is saponified. Saponification is under the condition of stirring and reflux (about...

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Abstract

The invention discloses a vegetable concentrated juice prepared from vegetable leaves and a preparation method thereof. The concentrated juice is prepared by pre-washing raw materials, freezing, thawing, making juice, settling and concentrating clean fluid. The invention further discloses a method for extracting chlorophyll and preparing sodium copper chlorophyllin or sodium zinc chlorophyllin from the wastes left after preparing the vegetable concentrated juice. The vegetable concentrated juice provided by the invention has good taste, special vegetable flavor and good stability with little loss in nutrition components or active substances. The main technical indexes of the sodium copper chlorophyllin and sodium zinc chlorophyllin prepared by the method of the invention basically comply with the national GB3262-82 standard, thereby having the effects of cost saving and environment protection.

Description

technical field [0001] The invention relates to a vegetable leaf concentrated juice prepared by using vegetable leaves and a preparation method thereof. The invention also relates to a method for preparing copper chlorophyllin sodium salt or zinc chlorophyllin sodium salt from the waste when vegetable leaves are used to prepare vegetable concentrated juice. Background technique [0002] Numerous studies have shown that cruciferous Brassica vegetables have anticancer activity. Cruciferous Brassica vegetables such as cabbage and broccoli are rich in isothiocyanate derivative sulforaphane, which has the effect of treating cancer and killing white blood cells. Foreign countries eat cabbage and broccoli as important functional vegetables . [0003] Use the discarded outer old leaves of broccoli and cabbage to squeeze juice, and produce vegetable juice through separation, clarification and concentration. The precipitate separated from the juice is rich in chlorophyll (0.4% fresh ...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L1/28A23L19/00
Inventor 钱骅赵伯涛黄晓德张卫明
Owner NANJING WILD PANT COMPREHENSIVE UTILIZATION INST THE ALL CHINA SUPPLY & MARKETING COOPERATIV
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