CN107080021B - Preparation method of composite rhododendron pulchrum instant tea powder with high anthocyanin content - Google Patents
Preparation method of composite rhododendron pulchrum instant tea powder with high anthocyanin content Download PDFInfo
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- CN107080021B CN107080021B CN201710382681.6A CN201710382681A CN107080021B CN 107080021 B CN107080021 B CN 107080021B CN 201710382681 A CN201710382681 A CN 201710382681A CN 107080021 B CN107080021 B CN 107080021B
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- lycium ruthenicum
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/34—Tea substitutes, e.g. matè; Extracts or infusions thereof
Abstract
A method for preparing composite instant tea powder containing high anthocyanin content. The invention mainly relates to the technical field of deep processing of agricultural and sideline products, in particular to a method for extracting anthocyanin from lycium ruthenicum and compounding the anthocyanin with tea powder containing nutrients such as anthocyanin, tea polyphenol, caffeine, zinc and the like extracted from rhododendron tea. Firstly, adding vitamin C into fresh lycium ruthenicum mill, crushing to prepare lycium ruthenicum mill pulp, carrying out ultrasonic treatment to obtain a crude extract, carrying out vacuum low-temperature concentration to obtain a concentrated solution, uniformly mixing the concentrated extract of the lycium ruthenicum mill with rhododendron tea juice, and carrying out spray drying to obtain the composite rhododendron instant tea powder. The product prepared by the invention is green and environment-friendly, the loss of vitamin C and anthocyanin is less, the anthocyanin is stored stably, the tea polyphenol content is high, the anti-aging health-care effect is good, and the soup color and the aroma of the original tea after brewing can be effectively maintained.
Description
Technical Field
The invention mainly relates to the technical field of deep processing of agricultural and sideline products, in particular to a method for extracting anthocyanin from lycium ruthenicum and compounding the anthocyanin with tea powder containing anthocyanin, tea polyphenol, caffeine, zinc and other nutrients extracted from rhododendron tea, so that the anthocyanin has the effects of delaying senescence, improving eyesight, strengthening and improving radiation resistance.
Background
Lycium ruthenicum Murr, also called Mingmu fruit, Shi mu Guo and anthocyanin king. The Chinese medicine believes that the health-care tea has the effects of nourishing liver and kidney, replenishing vital essence to improve eyesight, nourishing blood and enhancing immunity of people. The Lycium ruthenicum Murr is rich in various nutritional ingredients such as protein, Lycium barbarum polysaccharide, amino acids, vitamins, minerals, trace elements, etc. Through scientific detection, the contents of calcium, iron and nicotinic acid are respectively 2.3, 4.6 and 16.7 times of those of the lycium ruthenicum, especially the content of procyanidine is 3690 mg in every hundred grams, and is more than 22 times of that of blueberry, so that the plant with the highest anthocyanin content is found in the world so far. Has effects in resisting aging, improving sleep, caring skin, improving skin, invigorating kidney, replenishing vital essence, preventing cancer, protecting liver, improving eyesight, and improving vision.
Zijuan, belonging to Pu' er tea variety, is a variant of tea plant of Yunnan large-leaf group, named because it presents Zijing, Ziye, Ziya and Zitang. Is rich in flavonoids, caffeine, zinc and anthocyanins. The anthocyanin has the functions of resisting oxidation, removing free radicals, protecting cardiovascular and cerebrovascular vessels, protecting liver, promoting blood circulation, relieving allergy, resisting radiation, protecting vision, resisting cancer, inhibiting cancer, preventing and treating various diseases and the like, but the content of the anthocyanin in the single Zijuan tea is very limited, so that the anthocyanin is difficult to become an ideal anti-aging health-care tea drink.
Disclosure of Invention
In order to improve the anthocyanin content in the Zijuan tea, the invention aims to provide a preparation method of composite Zijuan instant tea powder with high anthocyanin content, the product is green and environment-friendly, the loss of vitamin C and anthocyanin is low, the anthocyanin content is high and stable in storage, the tea polyphenol content is high, the anti-aging health-care effect is good, and the soup color and the aroma of the original tea after brewing can be effectively maintained.
The technical scheme adopted for realizing the purpose of the invention is as follows:
firstly, adding vitamin C accounting for 0.03-0.05% of the weight of fresh lycium ruthenicum mill, and crushing to prepare lycium ruthenicum mill pulp;
processing the black wolfberry pulp by using 30-35 kHz ultrasonic wave at the temperature of below 50 ℃ to obtain a crude extract;
③ carrying out vacuum concentration on the crude extract to 1/3 of the original volume to obtain a concentrated extract;
fourthly, uniformly mixing the concentrated lycium ruthenicum extractive solution with the rhododendron pulchrum tea juice, and performing spray drying to obtain composite rhododendron pulchrum instant tea powder;
filling and packaging to obtain the finished product.
The ultrasonic crude extraction treatment is to add 2.5-3.5% of dilute hydrochloric acid leaching liquor into the lycium ruthenicum pulp, wherein the weight volume ratio of the lycium ruthenicum pulp to the dilute hydrochloric acid leaching liquor is 1: 4.5-5.5 (g/ml), leaching for 3-5 times, each time for 13-16 min.
The extraction method of the rhododendron tea juice comprises the steps of cutting tea leaves into pieces with the granularity of 3-6 mm, adding the tea leaves into 10-15 times of aqueous solution by weight, and stirring and extracting for 2-3 hours at 18-28 ℃.
In the ultrasonic crude extraction, the lycium ruthenicum mill is processed until the extraction value of the pigment in the lycium ruthenicum mill reaches more than 96 percent; in the spray drying, the inlet temperature of hot air is 100-110 ℃, the outlet temperature is 55-60 ℃, and the spray drying is carried out at the feeding amount of 1.5-4L per hour.
The invention has the following characteristics: (1) the invention avoids using organic solvent, avoids the pollution of residual organic solvent; (2) the whole process adopts low-temperature extraction, vacuum low-temperature concentration and drying, and the anthocyanin is kept to the maximum extent and is prevented from being damaged by high temperature; (3) a certain amount of vitamin C is added to play a synergistic effect with anthocyanin so as to reduce the oxidation loss of the anthocyanin; (4) the ultrasonic treatment is matched, so that the extraction rate of the anthocyanin is improved, the content of tea polyphenol is higher, and the soup color and the aroma after brewing can be kept better; (5) the concentrated lycium ruthenicum extractive solution and the rhododendron tea juice are compounded in a liquid state, and are mixed sufficiently and uniformly; (6) the rhododendron tea and the black wolfberry anthocyanin are strengthened, so that the anthocyanin content is effectively increased, and the health-care function of the rhododendron tea is improved; (7) the anthocyanin is stable in storage, convenient to carry, brew and drink.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1:
pulping: selecting fresh, mature and undamaged black medlar, cleaning, and adding vitamin C accounting for 0.03 percent of the weight of the black medlar to obtain black medlar pulp;
② crude extraction: adding 2.5% dilute hydrochloric acid solution to lycium ruthenicum pulp, mixing the solution in a ratio of 1: 4.5 (g/ml) at a weight/volume ratio below 50 deg.C, treating with 30-35 kHz ultrasonic wave, leaching for 16min, filtering, repeating the leaching for 3 times to obtain crude extractive solution with pigment extraction value of 96%.
Concentration: vacuum concentrating the crude extractive solution at low temperature to 1/3 to obtain concentrated extractive solution;
spray drying: cutting Zijuan tea into 3mm, adding 10 times of water solution, and extracting at 18 deg.C under stirring for 2-3 hr; fully mixing the concentrated lycium ruthenicum extract and the rhododendron tea juice, uniformly stirring, and carrying out spray drying at the inlet temperature of 100 ℃ and the outlet temperature of 60 ℃ at a feeding amount of 1.5-4L per hour to obtain the composite rhododendron instant tea powder with high anthocyanin content;
and fifthly, packaging: filling and packaging to obtain the finished product.
Example 2:
pulping: selecting fresh, mature and undamaged black wolfberry, cleaning, and adding vitamin C accounting for 0.04 percent of the weight of the black wolfberry to obtain black wolfberry pulp;
② crude extraction: adding 3% diluted hydrochloric acid solution to lycium ruthenicum pulp, mixing the solution in a ratio of 1: and (3) treating the mixture at the weight volume ratio of 5 (g/ml) below 50 ℃, treating the mixture by using 30-35 kHz ultrasonic waves, leaching for 14min, filtering, and repeating the leaching for 3 times to obtain a crude extract and enable the pigment extraction value to reach 96%.
Concentration: vacuum concentrating the crude extractive solution at low temperature to 1/3 to obtain concentrated extractive solution;
spray drying: cutting Zijuan tea into 6mm, adding 14 times of water solution, and extracting at 25 deg.C under stirring for 3 hr; fully mixing the concentrated lycium ruthenicum extract and the rhododendron tea juice, uniformly stirring, and carrying out spray drying at the inlet temperature of hot air of 110 ℃ and the outlet temperature of 55 ℃ at a feeding amount of 1.5-4L per hour to obtain the composite rhododendron instant tea powder with high anthocyanin content;
and fifthly, packaging: filling and packaging to obtain the finished product.
Example 3:
pulping: selecting fresh, mature and undamaged black wolfberry, cleaning, and adding vitamin C accounting for 0.05 percent of the weight of the black wolfberry to obtain black wolfberry pulp;
② crude extraction: adding 3% diluted hydrochloric acid solution to lycium ruthenicum pulp, mixing the solution in a ratio of 1: 5.5 (g/ml) at a weight/volume ratio below 50 deg.C, treating with 30-35 kHz ultrasonic wave, leaching for 13min, filtering, repeating the leaching for 3 times to obtain crude extractive solution with pigment extraction value of 96%.
Concentration: vacuum concentrating the crude extractive solution at low temperature to 1/3 to obtain concentrated extractive solution;
spray drying: cutting Zijuan tea into 5mm, adding 15 times of water solution, and extracting at 28 deg.C under stirring for 2.5 hr; fully mixing the concentrated lycium ruthenicum extract and the rhododendron tea juice, uniformly stirring, and carrying out spray drying at the hot air inlet temperature of 105 ℃ and the outlet temperature of 58 ℃ at a feeding amount of 1.5-4L per hour to obtain the composite rhododendron instant tea powder with high anthocyanin content;
and fifthly, packaging: filling and packaging to obtain the finished product.
Claims (2)
1. A preparation method of composite rhododendron pulchrum instant tea powder with high anthocyanin content is characterized by comprising the following process steps:
firstly, adding vitamin C accounting for 0.03-0.05% of the weight of fresh lycium ruthenicum mill, and crushing to prepare lycium ruthenicum mill pulp;
processing the black wolfberry pulp by using 30-35 kHz ultrasonic wave at the temperature of below 50 ℃ to obtain a crude extract;
③ carrying out vacuum concentration on the crude extract to 1/3 of the original volume to obtain a concentrated extract;
fourthly, uniformly mixing the concentrated lycium ruthenicum extractive solution with the rhododendron pulchrum tea juice, and performing spray drying to obtain composite rhododendron pulchrum instant tea powder;
filling and packaging to obtain a finished product;
the ultrasonic crude extraction treatment is to add 2.5-3.5% of dilute hydrochloric acid leaching liquor into the lycium ruthenicum pulp, wherein the weight volume ratio of the lycium ruthenicum pulp to the dilute hydrochloric acid leaching liquor is 1: 4.5-5.5 times of leaching for 13-16 min each time, and leaching for 3-5 times;
the extraction method of the rhododendron tea juice comprises the steps of cutting tea leaves into 3-6 mm in particle size, adding 10-15 times of water solution by weight, and stirring and extracting for 2-3 hours at 18-28 ℃.
2. The preparation method of the composite rhododendron instant tea powder with high anthocyanin content, as claimed in claim 1, is characterized in that: in the ultrasonic crude extraction, the lycium ruthenicum mill is processed until the extraction value of the pigment in the lycium ruthenicum mill pulp reaches more than 96 percent; in the spray drying, the inlet temperature of hot air is 100-110 ℃, the outlet temperature is 55-60 ℃, and the spray drying is carried out at the feeding amount of 1.5-4L per hour.
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| CN108967583A (en) * | 2018-10-15 | 2018-12-11 | 甲二 | A kind of manufacture craft of purple cuckoo lemon tea |
| CN109984232A (en) * | 2019-03-27 | 2019-07-09 | 福建省农业科学院农业生态研究所 | Beautiful white tea of the purple of a kind of changeable colour and preparation method thereof |
| CN112273498A (en) * | 2020-11-13 | 2021-01-29 | 大闽食品（漳州）有限公司 | Processing method of natural purple tea extract |
| CN113662108A (en) * | 2021-07-30 | 2021-11-19 | 海南华美益实业有限公司 | Preparation method of composite noni pulp |
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| CN1323533A (en) * | 2001-04-23 | 2001-11-28 | 湖北洪湖蓝田水产品开发有限公司 | Proanthocyanidin tea and its making process |
| CN103977157A (en) * | 2014-05-17 | 2014-08-13 | 苟春虎 | Lycium ruthenicum eyesight-improving eye-protecting tea |
| CN104996619A (en) * | 2015-06-11 | 2015-10-28 | 亳州市益众堂保健食品有限公司 | Anti-aging instant tea and a preparation method thereof |
| CN105831320A (en) * | 2016-05-03 | 2016-08-10 | 福建春伦茶业集团有限公司 | White tea instant powder and making method thereof |
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