CN104957334A - Freeze-drying grapefruit tea and processing method thereof - Google Patents

Freeze-drying grapefruit tea and processing method thereof Download PDF

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Publication number
CN104957334A
CN104957334A CN201510458240.0A CN201510458240A CN104957334A CN 104957334 A CN104957334 A CN 104957334A CN 201510458240 A CN201510458240 A CN 201510458240A CN 104957334 A CN104957334 A CN 104957334A
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shaddock
drying
feed pipe
freeze
processing method
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CN201510458240.0A
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CN104957334B (en
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陈军辉
陈华强
方莉萍
周惠艺
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Zhongbao (fujian) Food Science & Technology Co Ltd
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Zhongbao (fujian) Food Science & Technology Co Ltd
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Abstract

The invention belongs to the field of processing of tea products, and particularly provides free-drying grapefruit tea and a processing method thereof. The freeze-drying grapefruit tea product is prepared by selecting fresh grapefruits, cleaning, cutting, peeling, rapidly freezing and hardening, sublimating and drying, and packaging. The free-drying grapefruit tea can effectively retain the nutritional ingredients and aroma components of the grapefruits, after the grapefruit tea is brewed, fruit particles are full and clear, and the original aroma of the grapefruit is emitted, and the grapefruit tea tastes sour and sweet, can be preserved at room temperature for a long time, and has good market prospect.

Description

A kind of freeze-drying citron tea and processing method thereof
Technical field
The invention belongs to tea product manufacture field, be specifically related to a kind of freeze-drying citron tea and processing method thereof.
Background technology
Shaddock (Citrus maxima), have another name called pomelo, fragrant goldenrain tree etc., it is the ripening fruits of Citrus paradisi Macfadyen, its smell delicate fragrance, sweet mouthfeel, nutritious, one of fruit of people's eating, also being the fruit of the most food therapy effect that medical circle is generally acknowledged, and being honey citron tea prepared by primary raw material with shaddock, is also deeply by the health-preserving beverage that the states such as Japan and Korea S praise highly.But because shaddock resting period under normal temperature condition is short, easily go mouldy, be prepared into tea product often to need to add the anticorrisive agents such as Sodium Benzoate, and by after grapefruit flesh fragmentation through extract or the teabag drink be prepared into of squeezing the juice, original grain shape and the local flavor of shaddock can not be retained, and vitamin C can be made in preparation process to lose in a large number, thus reduce its nutritive value, these are all the key issues restricting the development of shaddock deep processed product at present.
Summary of the invention
The object of the present invention is to provide a kind of freeze-drying citron tea and processing method thereof, obtained freeze-drying citron tea effectively can retain nutritional labeling in shaddock and fragrance component, brew that consequence grain is full, particle is clearly demarcated, give out the original delicate fragrance of shaddock, sweet mouthfeel, and it can be deposited by normal temperature for a long time, has good market prospects.
For achieving the above object, the present invention adopts following technical scheme:
A processing method for freeze-drying citron tea, is characterized in that: specifically comprise the steps:
1) raw material is selected: choose no-dehiscent fruit, without rotting, particle diameter is at the fresh grapefruit of 18-20cm;
2) clean: adopt continuous automatic sprinkling type cleaning machine to clean shaddock, and soak pericarp surface with the disinfection agent of chlorine dioxide rolling that concentration is 200-250 ppm;
3) cut off: adopt quartering Automatic continuous cutting machine to be cut off by shaddock;
4) peeling: first the spongy layer of shaddock and pericarp thereof are removed, skin and flesh is separated, then rejects the seed on outer for pulp capsule clothing and pulp, and is peeled away gently by fruit grain before quick-frozen;
5) quick-frozen sclerosis: by gained fruit grain uniform spreading on food disc, often 8.0kg placed by dish, then it put into immediately the quick freezing repository freezing processing 2-3h of-30 ~-40 DEG C, makes the sclerosis of fruit grain;
6) lyophilization: ensure that the central temperature of sclerosis consequence grain is below-25 DEG C, be then placed on condenser temperature lower than-35 DEG C, low vacuum carries out vacuum drying under the condition of 100Pa, is 3-5% to its moisture;
7) pack: by dried fruit grain by specification packing, be up to the standards and get final product.
Gained citron tea can add other material allocations, is processed into citron tea drink further.
The Automatic continuous of the quartering described in step 3) cutting machine comprises the feed pipe fallen in order to shaddock vertically arranged, the middle and lower part of this feed pipe inner chamber is furnished with four circular rotating cutting blades radially distributed, four circular rotating cutting blades are all fed through feed pipe sidewall and intersect at a bit in feed pipe inner chamber, simultaneously feed pipe is outside equipped with the drive motors through power transmission shaft and described rotary cutting blade driving coupling one by one, is external to sheet shaddock gathering-device bottom described feed pipe;
Correspondingly on described feed pipe offer the through hole of dodging rotary cutting blade;
Described feed pipe is outside equipped with the pedestal accepting drive motors, pedestal offers the through hole of dodging rotary cutting blade;
The top of described feed pipe is provided with taper feed hopper.
Vacuum drying described in step 6) is divided into three phases, first stage is after temperature is risen to 80 ~ 85 DEG C fast in 1h dry 6 hours, second stage is at 70 ~ 75 DEG C dry 7 hours, phase III keeps 2-4 hour after temperature is reduced to 60 DEG C in 2h, and whole dry run continues 18-20 hour.
The eating method of obtained freeze-drying citron tea is: get described citron tea 10g, add 2-3g honey, wash open by 200mL warm water.
remarkable advantage of the present invention is:
(1) the present invention is first through cryogenic quick freezing; be conducive to the protection of shaddock Middle nutrition composition on the one hand; and avoid the loss of aroma volatile; carrying out on the other hand processing under low-temperature condition can the activity of inhibitory enzyme and microbial growth; extend the storage time; in addition, effectively can keep the original full state of grapefruit flesh particle through snap frozen, thus have material impact to obtained product design.
(2) the present invention carries out vacuum sublimation drying after cryogenic freezing, the loss of the fruit grain profile that not only can prevent conventional high-temperature drying from causing, the change of color and fruit grain Middle nutrition composition, and gets rid of most of moisture, thus ensures that product stores for a long time; Meanwhile, the fruit plastochondria after freezing is long-pending to change hardly, can not produce shrinkage phenomenon, and after water sublimed, fruit intragranular portion be loose porous spongy, and adding water time edible, brew can rehydration rapidly, and recovery is the original full state of grain really.
(3) obtained freeze-drying citron tea of the present invention effectively can retain nutritional labeling in shaddock and fragrance component, brews that consequence grain is full, particle clearly demarcated, give out the original delicate fragrance of shaddock, sweet mouthfeel, and it can be deposited by normal temperature for a long time, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the unitary construction schematic diagram of quartering Automatic continuous cutting machine of the present invention.
Fig. 2 is the organigram of quartering Automatic continuous cutting machine of the present invention when overlooking.
Fig. 3 is the organigram of quartering Automatic continuous cutting machine of the present invention when looking up.
In figure: 1-feed pipe, 2-rotary cutting blade, 3-power transmission shaft, 4-drive motors, 5-through hole, 6-pedestal, 7-taper feed hopper.
Detailed description of the invention
More being convenient to make content of the present invention understand, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention being not limited only to this.
As shown in Fig. 1 ~ 3, the present invention's quartering Automatic continuous used cutting machine comprises the feed pipe 1 fallen in order to shaddock vertically arranged, the middle and lower part of feed pipe 1 inner chamber is furnished with four circular rotating cutting blades 2 radially distributed, four circular rotating cutting blades 2 are all fed through feed pipe 1 sidewall and intersect at feed pipe 1 lumen centers point, and described feed pipe 1 is outside equipped with the drive motors 4 through power transmission shaft 3 and described rotary cutting blade 2 driving coupling one by one; Meanwhile, feed pipe 1 offers multiple through hole 5 in order to dodge rotary cutting blade 2, feed pipe 1 is outside equipped with the pedestal 6 accepting drive motors 4, pedestal 6 offers multiple through hole 5 in order to dodge rotary cutting blade 2.
Diameter 3 ~ the 5cm larger than shaddock diameter of described feed pipe 1, so that shaddock falls; Its top is provided with taper feed hopper 7, and bottom is external to sheet shaddock gathering-device.
Embodiment 1
A processing method for freeze-drying citron tea, is characterized in that: specifically comprise the steps:
1) raw material select: choose no-dehiscent fruit, without rot, particle diameter about 20cm Xin Xian Guanxi small stream honey shaddock;
2) clean: adopt continuous automatic sprinkling type cleaning machine to clean shaddock, and soak pericarp surface with the disinfection agent of chlorine dioxide rolling that concentration is 200 ppm, residual to remove agriculture;
3) cut off: adopt quartering Automatic continuous cutting machine to be cut off by shaddock, namely drive motors 4 is started, shaddock to be cut is sent into feed pipe 1 from taper feed hopper 7, treat that shaddock falls to rotary cutting blade 2 place because of gravity, shaddock is cut by rotary cutting blade 2 instantaneously that radially distribute, and point shaddock cut continues to fall to sheet shaddock gathering-device;
4) peeling: first the spongy layer of shaddock and pericarp thereof are removed, skin and flesh is separated, then rejects the seed on outer for pulp capsule clothing and pulp, and is peeled away gently by fruit grain before quick-frozen;
5) quick-frozen sclerosis: by gained fruit grain uniform spreading on food disc, often 8.0kg placed by dish, then it put into immediately the quick freezing repository freezing processing 3h of-30 DEG C, makes the sclerosis of fruit grain;
6) lyophilization: ensure that the central temperature of sclerosis consequence grain is below-25 DEG C, then be placed on condenser temperature lower than-35 DEG C, low vacuum carries out vacuum drying in the lower point three phases of condition of 100Pa, first stage is after temperature is risen to 80 DEG C fast in 1h dry 6 hours, second stage is at 70 DEG C dry 7 hours, phase III keeps dry 3 hours after temperature is reduced to 60 DEG C in 2h, is 5% to its moisture;
7) pack: by dried fruit grain by specification packing, be up to the standards and get final product.
Embodiment 2
A processing method for freeze-drying citron tea, is characterized in that: specifically comprise the steps:
1) raw material select: choose no-dehiscent fruit, without rot, particle diameter about 19cm Xin Xian Guanxi small stream honey shaddock;
2) clean: adopt continuous automatic sprinkling type cleaning machine to clean shaddock, and soak pericarp surface with the disinfection agent of chlorine dioxide rolling that concentration is 220 ppm, residual to remove agriculture;
3) cut off: adopt quartering Automatic continuous cutting machine to be cut off by shaddock, namely drive motors 4 is started, shaddock to be cut is sent into feed pipe 1 from taper feed hopper 7, treat that shaddock falls to rotary cutting blade 2 place because of gravity, shaddock is cut by rotary cutting blade 2 instantaneously that radially distribute, and point shaddock cut continues to fall to sheet shaddock gathering-device;
4) peeling: first the spongy layer of shaddock and pericarp thereof are removed, skin and flesh is separated, then rejects the seed on outer for pulp capsule clothing and pulp, and is peeled away gently by fruit grain before quick-frozen;
5) quick-frozen sclerosis: by gained fruit grain uniform spreading on food disc, often 8.0kg placed by dish, then it put into immediately the quick freezing repository freezing processing 2h of-35 DEG C, makes the sclerosis of fruit grain;
6) lyophilization: ensure that the central temperature of sclerosis consequence grain is below-25 DEG C, then be placed on condenser temperature lower than-35 DEG C, low vacuum carries out vacuum drying in the lower point three phases of condition of 100Pa, first stage is after temperature is risen to 82 DEG C fast in 1h dry 6 hours, second stage is at 70 DEG C dry 7 hours, phase III continues maintenance 2 hours after temperature is reduced to 60 DEG C in 2h, is 4% to its moisture;
7) pack: by dried fruit grain by specification packing, be up to the standards and get final product.
Embodiment 3
A processing method for freeze-drying citron tea, is characterized in that: specifically comprise the steps:
1) raw material select: choose no-dehiscent fruit, without rot, particle diameter about 18cm Xin Xian Guanxi small stream honey shaddock;
2) clean: adopt continuous automatic sprinkling type cleaning machine to clean shaddock, and soak pericarp surface with the disinfection agent of chlorine dioxide rolling that concentration is 250 ppm, residual to remove agriculture;
3) cut off: adopt quartering Automatic continuous cutting machine to be cut off by shaddock, namely drive motors 4 is started, shaddock to be cut is sent into feed pipe 1 from taper feed hopper 7, treat that shaddock falls to rotary cutting blade 2 place because of gravity, shaddock is cut by rotary cutting blade 2 instantaneously that radially distribute, and point shaddock cut continues to fall to sheet shaddock gathering-device;
4) peeling: first the spongy layer of shaddock and pericarp thereof are removed, skin and flesh is separated, then rejects the seed on outer for pulp capsule clothing and pulp, and is peeled away gently by fruit grain before quick-frozen;
5) quick-frozen sclerosis: by gained fruit grain uniform spreading on food disc, often 8.0kg placed by dish, then it put into immediately the quick freezing repository freezing processing 2h of-40 DEG C, makes the sclerosis of fruit grain;
6) lyophilization: ensure that the central temperature of sclerosis consequence grain is below-25 DEG C, then be placed on condenser temperature lower than-35 DEG C, low vacuum carries out vacuum drying in the lower point three phases of condition of 100Pa, first stage is after temperature is risen to 85 DEG C fast in 1h dry 6 hours, second stage is at 75 DEG C dry 7 hours, phase III keeps dry 4 hours after temperature is reduced to 60 DEG C in 2h, is 3% to its moisture;
7) pack: by dried fruit grain by specification packing, be up to the standards and get final product.
Get prepared citron tea 10g, after adding honey 2-3g, brew by 200mL warm water, in gained tea product, shaddock fruit grain is full, particle is clearly demarcated, and give out the original delicate fragrance of shaddock, sweet mouthfeel, and after commercially available honey citron tea warm water is brewed, though have the sour-sweet mouthfeel of shaddock, but without pomelo fragrant, and its fruit grain shrinkage, not full, simultaneously, add compared with the anticorrisive agents such as Sodium Benzoate with commercially available honey citron tea, citron tea of the present invention adds without other in preparation process, and place under normal temperature and it still can be kept to have quality in 12-18 month, storage property is good.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (4)

1. a processing method for freeze-drying citron tea, is characterized in that: specifically comprise the steps:
1) raw material is selected: choose no-dehiscent fruit, without rotting, particle diameter is at the fresh grapefruit of 18-20cm;
2) clean: adopt continuous automatic sprinkling type fruit-vegetable cleaner to clean shaddock, and soak pericarp surface with the disinfection agent of chlorine dioxide that concentration is 200-250 ppm;
3) cut off: adopt quartering Automatic continuous cutting machine to be cut off by shaddock;
4) peeling: first the spongy layer of shaddock and pericarp thereof are removed, then rejects the seed on outer for pulp capsule clothing and pulp, and is peeled away gently by fruit grain before quick-frozen;
5) quick-frozen sclerosis: by gained fruit grain uniform spreading on food disc, often 8.0kg placed by dish, then it put into immediately the quick freezing repository freezing processing 2-3h of-30 ~-40 DEG C, makes the sclerosis of fruit grain;
6) lyophilization: ensure that the central temperature of sclerosis consequence grain is below-25 DEG C, be then placed on condenser temperature lower than-35 DEG C, low vacuum carries out vacuum drying under the condition of 100Pa, is 3-5% to its moisture;
7) pack: by dried fruit grain by specification packing, be up to the standards and get final product.
2. the processing method of freeze-drying citron tea according to claim 1, it is characterized in that: quartering Automatic continuous cutting machine described in step 3) comprises the feed pipe fallen in order to shaddock vertically arranged, the middle and lower part of this feed pipe inner chamber is furnished with four circular rotating cutting blades radially distributed, four rotary cutting blade are all fed through feed pipe sidewall and intersect at a bit in feed pipe inner chamber, simultaneously feed pipe is outside equipped with the drive motors through power transmission shaft and described rotary cutting blade driving coupling one by one, sheet shaddock gathering-device is external to bottom described feed pipe,
Correspondingly on described feed pipe offer the through hole of dodging rotary cutting blade;
Described feed pipe is outside equipped with the pedestal accepting drive motors, pedestal offers the through hole of dodging rotary cutting blade;
The top of described feed pipe is provided with taper feed hopper.
3. the processing method of freeze-drying citron tea according to claim 1, it is characterized in that: vacuum drying described in step 6) is divided into three phases, first stage is after temperature is risen to 80 ~ 85 DEG C fast in 1h dry 6 hours, second stage is at 70 ~ 75 DEG C dry 7 hours, phase III keeps 2-4 hour after temperature is reduced to 60 DEG C in 2h, and whole dry run continues 18-20 hour.
4. the freeze-drying citron tea that processing method is obtained as claimed in claim 1.
CN201510458240.0A 2015-07-31 2015-07-31 A kind of lyophilized citron tea and its processing method Active CN104957334B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106234686A (en) * 2016-08-25 2016-12-21 开平市水口镇卡摩商行 A kind of production technology of citron tea
CN109329388A (en) * 2018-08-30 2019-02-15 江苏龙山湖生物科技有限公司 A kind of pre-treating technology that grape is lyophilized
CN112042792A (en) * 2020-10-20 2020-12-08 中宝(福建)食品科技有限公司 Honey pomelo and pineapple tea and processing method thereof

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CN103330263A (en) * 2013-06-24 2013-10-02 杨李益 Melon and fruit cutting machine and cutting method thereof
CN103652027A (en) * 2012-09-08 2014-03-26 哈尔滨艾克尔食品科技有限公司 Citrus maxima milky tea powder
TW201416010A (en) * 2012-10-17 2014-05-01 gui-hao Xu Processing method for pomelo
CN103766544A (en) * 2014-01-07 2014-05-07 天津科技大学 Preparation method of honey grapefruit tea
CN104365952A (en) * 2014-11-25 2015-02-25 恩平市黄亚山茶业专业合作社 Preparation method of grapefruit tea

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090083725A (en) * 2008-01-30 2009-08-04 지은정 Method for production of citron tea using flesh and peel of citron
CN102325457A (en) * 2009-02-24 2012-01-18 客乐谐食品株式会社 Dried cut citrus fruit and manufacturing process therefor
CN201720872U (en) * 2010-05-14 2011-01-26 江苏海鸥食品机械制造有限公司 Fruit and vegetable cut-open device
US20120177790A1 (en) * 2011-01-07 2012-07-12 Carrier Commercial Refrigeration, Inc. Method and apparatus for preparing food, particularly fruit
CN102132844A (en) * 2011-03-03 2011-07-27 谢振文 Producing method of debitterized low-carbohydrate freeze-dried lemon slices
CN102349630A (en) * 2011-10-31 2012-02-15 冯松平 Deep processing technology of pomelo
CN103652027A (en) * 2012-09-08 2014-03-26 哈尔滨艾克尔食品科技有限公司 Citrus maxima milky tea powder
TW201416010A (en) * 2012-10-17 2014-05-01 gui-hao Xu Processing method for pomelo
CN103070268A (en) * 2013-01-17 2013-05-01 吉林博大农林生物科技有限公司 Active ginseng fruit tea processing method
CN103330263A (en) * 2013-06-24 2013-10-02 杨李益 Melon and fruit cutting machine and cutting method thereof
CN103766544A (en) * 2014-01-07 2014-05-07 天津科技大学 Preparation method of honey grapefruit tea
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106234686A (en) * 2016-08-25 2016-12-21 开平市水口镇卡摩商行 A kind of production technology of citron tea
CN109329388A (en) * 2018-08-30 2019-02-15 江苏龙山湖生物科技有限公司 A kind of pre-treating technology that grape is lyophilized
CN112042792A (en) * 2020-10-20 2020-12-08 中宝(福建)食品科技有限公司 Honey pomelo and pineapple tea and processing method thereof

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