CN1088562C - Ordinary-temp antistaling tachnology for litchi and longan - Google Patents
Ordinary-temp antistaling tachnology for litchi and longan Download PDFInfo
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- CN1088562C CN1088562C CN99110216A CN99110216A CN1088562C CN 1088562 C CN1088562 C CN 1088562C CN 99110216 A CN99110216 A CN 99110216A CN 99110216 A CN99110216 A CN 99110216A CN 1088562 C CN1088562 C CN 1088562C
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Abstract
The present invention relates to a refreshing agent for subtropical fruits of litchis and longan. A water solution comprises a natural polysaccharide film forming substance, organic acid, sterilization preservative and an auxiliary agent. Fresh fruits are soaked in short time; the fresh fruits can be refreshed for 10 to 18 days at natural temperature in summer after aired; the color of the fresh fruits is unchanged in the refreshing time, and the fruit fragrance is unchanged. The eating of the fruits is safe. The present invention provides a refreshing method of good effect and convenient operation for the long distance transport and the sale of subtropical fruits.
Description
The present invention relates to the preservation technique of a kind of fruit antistaling agent and normal-temperature fresh-keeping technology, particularly lichee and longan.
Lichee and longan are to be difficult to fresh-keeping subtropical fruit, and particularly normal-temperature fresh-keeping is more difficult.At present, the preservation method of lichee and longan generally has refrigeration, air conditioned storage and room temperature storage etc., and with refrigeration and the fresh-keeping storing purpose that can reach the long period of modified atmosphere storage technology, but equipment requires harshness, investment is big, cost is high, shelf life is extremely short.Some country adopts SO
2Fumigation and acidleach two-step method are handled lichee, though can keep the redness of fruit, SO effectively
2Pericarp variable color, concentration are crossed do not had sterilization when hanging down again.And SO
2Some fungi is not had killing effect, and cause uncomfortable taste, therefore limited its application.
Chinese patent discloses 94107278.9 and proposes the fruit antistaling agent that a kind of chemicals make enzyme deactivation, adopt acid, alkali, salt or proteolytic enzyme to change the activity of enzyme in the fruit, lichee after this method is handled and longan can only make freshness date prolong 2-3 days as not adopting the refrigeration measure at normal temperatures.Though Chinese patent 97105377.4 disclosed another patented technology are normal temperature antistaling agents, what adopt is to decomposite SO
2The oxysalt of sulphur, and preserve with the polybag encapsulation, fresh keeping principle remains and utilizes SO
2Sterilization, therefore have the problems referred to above equally.Therefore, present many researchers still can effectively prolong the preservation method of the storage period of subtropical fruits such as lichee and longan in continuous exploration.
The present invention seeks to develop a kind of normal-temperature fresh-keeping lichee of Nantural non-toxic antistaling agent and new technology of longan of adopting, this technology is simple and practical, both be applicable to dispersed the processing, also be applicable to and focus on, not only make fresh fruit that certain freshness date is arranged, and the fruit color after fresh-keeping is moist naturally, pulp flavor is pure, free from extraneous odour, quality is good.
The objective of the invention is to realize by following step:
At the characteristics and the mechanism of lichee and the variation of longan post-harvest physiology, be raw material with nontoxic natural goods, be equipped with necessary auxiliary agent and make antistaling agent, soak fresh fruit in short-term, to regulate the physiological equilibrium of fresh fruit, can pack after draining, and storing at normal temperatures.
Used antistaling agent is the film forming matter based on natural polysaccharide or its modifier, adoptable natural polysaccharide comprises sodium alginate, shitosan, dextrin, starch, cellulose and/or several mixture between them, make it to form thin, subtle, the water white pellicle of one deck at fruit surface, with inhibition fruits respiratory and aging, thus the storage period of prolongation fruit.The film forming matter of these natural polysaccharides selects its molecular weight should be between 30,000-150,000, and concentration range is between 0.05-4%.
For the film forming matter dispersive property that can make natural polysaccharide is good, should add organic acid, organic acid is chosen in citric acid, tartaric acid, ascorbic acid, acetate, oxalic acid, fumaric acid, maleic acid, its concentration is between 0.05-10%.
Adding some sterilization antiseptics also is characteristics of the present invention, is subjected to mould infringement after the litchi and longan maturation easily and rots, so the present invention selects Te Keduo, carbendazim, octicin solution, calcium hypochlorite, sorbic acid and salt thereof for use, its concentration range is between 0.01-0.5%.
In addition; add some coagents; can make antistaling agent of the present invention have the fruit maturation of inhibition senescence process; regulate fruit body water balance; prevent effects such as casing coloring; these coagents are at glucose; sucrose and their derivative; lecithin; the C8-18 long-chain fatty acid ester; 2; 4-dichloro-benzenes glycolic; 2-chloroethyl trimethyl ammonium chloride; ethyl carbamyl phosphate; 3-butyl-2; 4-dichloro benzyl chlorination phosphorus; maleic hydrazide; 2-isopropyl-4-(trimethyl ammonium chloride)-5-5 methyl-phenyl croak pyridine carboxylate; acid succinic acid list acyl dimethylhydrazine and 2-cyclopropyl-2-(4-first chlorphenyl)-5-pyrimidine radicals methyl alcohol are chosen; the concentration of these auxiliary agents can be selected one or more of above auxiliary agent between 0.01-0.5%.
The preparation method of litchi and longan antistaling agent of the present invention is earlier with the organic acid thin up, mix with natural polysaccharide or film forming matter then, the natural polysaccharide film forming matter is fully dissolved, add sterilization antiseptic then and auxiliary agent stirs, add pure water and be diluted to concentration and can use.
Preservation process is will fresh fruit to pluck down remove decayed fruit, deadwood and leaf, put into then antistaling agent soak 2-10 minute (surpass 10 minutes also passable, but lose time), pick up and dry, can pack into carton or bamboo basket are stored and are transported.
With present technique lichee is carried out static fresh-keeping (promptly storing in the original place through the fresh fruit of Preservation Treatment), freshness date reaches 10-18 days under the summer environment temperature, if reserve temperature is adjusted in 15-20 ℃, freshness date can reach 20-25 days.Carrying out dynamically fresh-keeping (promptly simulating the actual storing condition of commodity) with present technique, is to transport 20-36 ℃ of storage afterwards under 35-45 ℃ in temperature, and freshness date can reach 8-10 days.
It is fresh-keeping with present technique longan to be carried out static state, and freshness date reaches 15-20 days under the summer temp.The right side is carried out dynamically fresh-keeping, and freshness date can reach 10-13 days, has illustrated that antistaling agent of the present invention is remarkably productive.
The present invention compared with prior art, its outstanding substantive distinguishing features and obvious improvement is:
(1) present technique is that subtropical fruit lichee and longan are carried out fresh-keeping and storing under the normal temperature condition, therefore to storage and transportation equipment without any specific (special) requirements.
(2) the used antistaling agent of present technique is nonpoisonous and tasteless, therefore can not cause any harm to edible safety and the consumer psychology of lichee and longan.
(3) it is constant that present technique is handled the original color, smell and taste of back fruit, therefore can the commodity value of lichee and longan do not worked the mischief.
(4) the used antistaling agent raw material sources of present technique enrich, and operation is simple, both has been applicable to the extensive processing of group type, also is applicable to family workshop-based processing, has stronger adaptability.
(5) lichee and longan after present technique is handled have long freshness date and shelf life at normal temperatures, and this is that cold storing and fresh-keeping, controlled atmosphere and other preservation techniques are incomparable.
Below be embodiments of the invention:
Embodiment one, and 20g starch adds the low amounts of water dissolving earlier, adds ascorbic acid 2g again, 100mg Te Keduo, and the 500ppm lecithin adds water to 1kg, mixing, dipping fresh fruit 2-10 minute picks up drip-dry, and vanning is sealed and can be stored and transported.
Embodiment two: by 3% shitosan+200mg/kg carbendazim+500ppm maleic=hydrazides+5% oxalic acid, the antistaling agent that is made into, the dipping fresh fruit picks up drip-dry, and the vanning sealing can store and transport.
Three: the 0.1% calcium hypochlorite+2% sodium alginate+acid succinic acid list of 400mg/kg octicin solution+0.5% acyl dimethylhydrazine+0.1% sucrose of embodiment, the antistaling agent that is made into, the dipping fresh fruit picks up and dries, and the vanning sealing can store and transport.
Four: 1% dextrin+500mg/kg Te Keduo+0.5% sucrose ester+0.4% ethyl carbamyl phosphate of embodiment is made into antistaling agent, and the dipping fresh fruit picks up and drains, and stores and transports in 15-20 ℃ of environment.
Five: 0.2% shitosan+1% tartaric acid+1000ppm carbendazim+0.3% glucose+0.2% sucrose esters of embodiment, the antistaling agent that is made into, the dipping fresh fruit picks up drip-dry, and the vanning sealing can store and transport.
Six: the 0.1% cellulose+acid succinic acid list of 0.5% citric acid+0.5% acyl dimethylhydrazine+0.1% lecithins of embodiment, the antistaling agent that is made into, the dipping fresh fruit picks up drip-dry, and the vanning sealing can store and transport.
Seven: 1% shitosan+2% starch+2% ascorbic acid+0.5% bacteriums of embodiment disappear+0.1% sucrose ester, the antistaling agent that is made into, and the dipping fresh fruit picks up drip-dry, and the vanning sealing can store and transport.
Embodiment eight: with maleoyl-callosity+0.5% lecithin of 1% oxalic acid+0.5%, soaks, picks up and soak with 2% shitosan+2% oxalic acid again after draining, and the antistaling agent that is made into, the dipping fresh fruit picks up and dries, and vanning seals and can store and transport.
Embodiment nine: the antistaling agent that cellulose 0.3%+1% acetic acid+0.5% oxalic acid+0.5% ethyl carbamyl phosphate is made into, and the dipping fresh fruit picks up drip-dry, and the vanning sealing can store and transport.
Ten: 1% sodium alginate+3% shitosan+2% citric acid+1% glucose+0.1% lecithins of embodiment, the antistaling agent that is made into, the dipping drip-dry, the vanning sealing can store and transport.
Claims (4)
1. litchi and longan normal temperature antistaling agent, it is characterized in that being dissolved in water by natural polysaccharide film forming matter and coagent, organic acid, sterilization antiseptic forms, and described each material composition and weight content are as follows:
(1) natural polysaccharide film forming matter is selected from molecular weight at 30,000-150,000 sodium alginate, shitosan, dextrin, starch, cellulosic wherein a kind of or mixture, and concentration is 0.05-4%,
(2) coagent; be selected from glucose; sucrose and their derivative; lecithin; the C8-18 long-chain fatty acid ester; 2; 4-dichloro-benzenes glycolic; 2-chloroethyl trimethyl ammonium chloride; ethyl carbamyl phosphate; 3-butyl-2; 4-dichloro benzyl chlorination phosphorus; maleic hydrazide; 2-isopropyl-4-(trimethyl ammonium chloride)-5-5 methyl-phenyl croak pyridine carboxylate; the wherein a kind of or mixture of acid succinic acid list acyl dimethylhydrazine and 2-cyclopropyl-2-(4-first chlorphenyl)-5-pyrimidine radicals methyl alcohol; the concentration of these coagents is between 0.01-0.05%
(3) organic acid, concentration are 0.05-10%,
(4) sterilization antiseptic, concentration are 0.01-0.5%,
(5) water, surplus.
2. litchi and longan normal temperature antistaling agent according to claim 1 is characterized in that organic acid is selected from citric acid, tartaric acid, ascorbic acid, acetic acid, oxalic acid, fumaric acid, maleic acid.
3. litchi and longan normal temperature antistaling agent according to claim 1 is characterized in that sterilization antiseptic is selected from Te Keduo, carbendazim, octicin solution, calcium hypochlorite, sorbic acid and salt thereof.
4. a litchi and longan normal temperature fresh-keeping method is characterized in that the antistaling agent of the fresh fruit of plucking being put into the arbitrary claim of claim 1-3 soaked 2-10 minute, picked up and dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99110216A CN1088562C (en) | 1999-06-26 | 1999-06-26 | Ordinary-temp antistaling tachnology for litchi and longan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99110216A CN1088562C (en) | 1999-06-26 | 1999-06-26 | Ordinary-temp antistaling tachnology for litchi and longan |
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| CN1279023A CN1279023A (en) | 2001-01-10 |
| CN1088562C true CN1088562C (en) | 2002-08-07 |
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| CN99110216A Expired - Fee Related CN1088562C (en) | 1999-06-26 | 1999-06-26 | Ordinary-temp antistaling tachnology for litchi and longan |
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Cited By (1)
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| CN103300142A (en) * | 2013-05-08 | 2013-09-18 | 南京年吉冷冻食品有限公司 | Method for preparing tender and fresh keeping agent of green corn |
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| CN100340174C (en) * | 2004-02-23 | 2007-10-03 | 武汉益生泉生物科技开发有限责任公司 | Method for antistaling leechee with runctions of anti-oxidation and anti-brown |
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| CN100459867C (en) * | 2006-11-27 | 2009-02-11 | 华南理工大学 | Fresh-keeping method for lichee |
| CN101669541B (en) * | 2009-09-22 | 2012-05-30 | 中国热带农业科学院南亚热带作物研究所 | Method for prolonging refreshing time of leechee fruit after being picked |
| CN102388957B (en) * | 2011-11-21 | 2013-06-12 | 广西壮族自治区农业科学院农产品加工研究所 | Lichee natural coating antistaling agent and its preparation method |
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| CN103689070B (en) * | 2013-12-16 | 2015-11-04 | 苏州安特实业有限公司 | Antistaling agent for litchi and preparation method thereof |
| CN103734270B (en) * | 2013-12-25 | 2016-03-02 | 广西科技大学 | A kind of antistaling agent for litchi and preparation method thereof |
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| CN109105478A (en) * | 2018-09-12 | 2019-01-01 | 河南工业大学 | A kind of fruit and vegetable fresh-keeping agent and its application containing trans- -2- hexenoic acid |
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| CN112514985B (en) * | 2020-11-17 | 2023-05-19 | 中国热带农业科学院香料饮料研究所 | Preservative for tropical high-sugar fruits, preparation method and use method thereof |
| CN113045786B (en) * | 2021-04-02 | 2022-11-08 | 广西大学 | Multifunctional self-fit film and method and application for quickly positioning and forming film |
| CN113229357A (en) * | 2021-05-07 | 2021-08-10 | 北部湾海洋新材料研究院 | Litchi preservation spray and preparation method thereof |
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| US4751091A (en) * | 1986-08-15 | 1988-06-14 | University Of Hawaii | Preservation of reddish color of lychee pericarp |
| CN1147899A (en) * | 1995-10-19 | 1997-04-23 | 林添波 | Agent for preservation of Lichi fruit |
-
1999
- 1999-06-26 CN CN99110216A patent/CN1088562C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4751091A (en) * | 1986-08-15 | 1988-06-14 | University Of Hawaii | Preservation of reddish color of lychee pericarp |
| CN1147899A (en) * | 1995-10-19 | 1997-04-23 | 林添波 | Agent for preservation of Lichi fruit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103300142A (en) * | 2013-05-08 | 2013-09-18 | 南京年吉冷冻食品有限公司 | Method for preparing tender and fresh keeping agent of green corn |
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| CN1279023A (en) | 2001-01-10 |
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