CN104304442A - Tomato coating preservation method - Google Patents
Tomato coating preservation method Download PDFInfo
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- CN104304442A CN104304442A CN201410586318.2A CN201410586318A CN104304442A CN 104304442 A CN104304442 A CN 104304442A CN 201410586318 A CN201410586318 A CN 201410586318A CN 104304442 A CN104304442 A CN 104304442A
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Abstract
The invention discloses a tomato coating preservation method. The tomato coating preservation method comprises the following steps: (1) pretreatment of raw materials; (2) soaking; (3) film preservation. In the invention, tomatoes are cleaned by a sodium bicarbonate solution with mass concentration of 0.3-0.5%, the cleaning effect is good, the film forming property of the preservative can be greatly perfected, thus the preservation film forming solution can be uniformly attached to the surfaces of the tomatoes, coating preservation is performed on the tomatoes in the manner of soaking and cold air drying, the preservation film forming solution is optimized and improved aiming at the properties of the tomatoes, the components in the preservation film forming solution mutually cooperate, thus being safe and efficient, low in cost, good in film forming property and capable of perfecting the outlines of the tomatoes and prolonging the refreshing time of the tomatoes, and the entire method is simple in process steps, strong in maneuverability, high in efficiency, little in equipment investment, environmentally friendly and safe, good in film forming quality and suitable for industrial production.
Description
Technical field
The present invention relates to food preservative technology field, especially relate to a kind of tomato coating-film fresh-keeping method.
Background technology
Tomato has another name called tomato, and how perennial be Solanaceae 1 year raw herbaceous plant, be in the torrid zone.Because tomato moisture is high, fresh and tender skin is thin, very easily damages, and brings much inconvenience to storing, is subject to the impact of the multiple diseases such as epidemic disease, soft rot, real maize ear rot or infects at duration of storage, very easily causes going mouldy rotten.
Domestic now conventional tomato pr eservation technology mainly contains cold storing and fresh-keeping and controlled atmosphere, dry fresh-keeping etc., but above-mentioned technology all to there is cost high, not easy-operating shortcoming.Therefore, development and improvement, to the preserving and storing techniques of tomato, has very significant economic benefit and social benefit.
Coating-film fresh-keeping method at present popular carries out fresh-keeping new technology to food both at home and abroad, its with large biological molecule (as polysaccharide, protein and lipid etc.) be raw material, by parcel, dipping, coating, the film that one deck that the forms such as sprinkling are covered in food surface or inside can be made up of feeding habits material, reduce germ contamination, stop growth of microorganism, weaken air oxidation, slow down lipid oxidation rates, such as, application publication number CN103392786A, a kind of tomato pr eservation method is disclosed in the Chinese patent of Shen Qing Publication day 2013.11.20, by the tomato pr eservation agent even application configured on the most probably ripe tomato of having gathered, tomato is once dried by spraying afterwards naturally, tomato plastics fruit and vegetable box is cased, put into the warehouse that temperature is 12 ~ 18 DEG C, need warehouse ultraviolet disinfection 4 hours before putting into warehouse.This preservation method adopts spraying method that antistaling agent is sprayed onto tomato surface, efficiency is low, and it is uneven, naturally dry after spraying, film forming speed is slow and uneven, the antistaling agent used in the method is in addition made up of the raw material of following weight parts proportioning: light-coloured vinegar 50 ~ 50 parts, konjaku powder 50 ~ 150 parts, vitamin E 5 ~ 15 parts, micro-element B5 ~ 15 part and pure water 100000 parts, this antistaling agent is using konjaku powder as film forming agent, due to tomato smooth surface, this antistaling agent is difficult to evenly be attached to tomato surface filming, filming performance is poor, in addition, there is larger gap in the film that this antistaling agent is formed, effectively can not reduce the evaporation of tomato moisture, cause tomato weight-loss ratio larger, and the function singleness of this antistaling agent.
Summary of the invention
The present invention is that the tomato pr eservation method efficiency in order to solve prior art is low, and the problem of fresh-keeping effect difference, provides a kind of processing step simple, workable, equipment investment is few, Environmental Safety, be applicable to suitability for industrialized production, greatly can improve the tomato coating-film fresh-keeping method of tomato.
To achieve these goals, the present invention is by the following technical solutions:
A kind of tomato coating-film fresh-keeping method, comprises the following steps:
(1) pretreatment of raw material: select to have no mechanical damage, without rotten spot, has the tomato of the green flower base of a fruit as fresh-keeping object, is after the sodium bicarbonate solution cleaning of 0.3 ~ 0.5%, drains tomato mass concentration.Tomato employing mass concentration is the sodium bicarbonate solution cleaning of 0.3 ~ 0.5%, cleaning performance is good, and most importantly, the sodium ion remaining in tomato surface is positively charged, greatly can improve the filming performance of fresh-keeping film forming solution, make fresh-keeping film forming solution can evenly be attached to tomato surface.
(2) soak: the tomato in step (1) is placed in after fresh-keeping film forming solution soaks 10 ~ 20min and takes out, described fresh-keeping film forming solution is made up of the component of following mass percent: 0.5 ~ 1% lecithin, 0.05 ~ 0.1% phytic acid, 1 ~ 2% Tween-80,0.05 ~ 0.1% konjacmannan, 0.1 ~ 0.3% xanthans, 0.2 ~ 0.4% sodium chloride, 0.3 ~ 0.5% nano silicon, 0.5 ~ 1% glycerine, 0.3 ~ 0.5% calgon, surplus is gardenia extract.The characteristic that the present invention is directed to tomato is optimized improvement to fresh-keeping film forming solution, wherein, lecithin can suppress the respiration of tomato and the growth of pathogen, extend the period of storage of tomato to greatest extent, reduce the rotting rate of tomato, and the hydrophilic radical of lecithin also can keep tomato peel moistening, improves the glossiness of tomato, phytic acid can prevent tomato surface from occurring rotten spot and ascorbic loss, Tween-80 (Tween-80) plays the effect of emulsifying agent, improves the stability of antistaling agent, konjacmannan and xanthans are film forming matter, konjacmannan filming performance is good, the gloss keeping tomato surface can be continued, konjacmannan and xanthans act synergistically mutually, film is made to be in gel state, thus greatly improve elasticity and the rigidity of film, but there is more gap in the film that konjacmannan and xanthans are formed, can make the OTR oxygen transmission rate of film and moisture-vapor transmission higher, affect fresh-keeping effect, therefore the present invention with the addition of gardenia extract, polysaccharide component in gardenia extract can join with konjacmannan and xanthans generation coupling, make that there is between konjacmannan and xanthans good viscosity, the gap on film can be greatly reduced, thus better hinder gas molecule through, in addition, gardenia extract also has the effect of sterilization and anticorrosion, fresh-keeping effect can be improved, sodium chloride is coalescents, can improve the transparency of film thus improve the outward appearance of tomato, nano silicon can strengthen fresh keeping property, and the pernicious gases such as ethene that tomato produces in storage process can be absorbed, to reduce the gases such as ethene to the dematuration of tomato, but nano silicon bad dispersibility, and glycerine and calgon act synergistically nano silicon can be made dispersed in antistaling agent, glycerine can also reduce moisture-vapor transmission and the OTR oxygen transmission rate of film, and can increase the plasticity of film, and glossiness is better.The mutual Synergistic of each component in fresh-keeping film forming solution of the present invention, safe and efficient, cost is low, and filming performance is good, can improve tomato outward appearance, extends the tomato pr eservation phase.
(3) film forming preservation: to the tomato in step (2) carry out cold wind air-dry after, store under being placed in 10 ~ 15 DEG C of environment.Employing cold wind is air-dry, and not only film forming efficiency is high, and the quality of film is good, and refrigerated storage temperature can not be too high or too low, otherwise tomato easily occurs to rot or damage to plants caused by sudden drop in temperature.
As preferably, in step (2), the mass ratio of tomato and fresh-keeping film forming solution is 1: 3 ~ 5, and the temperature of fresh-keeping film forming solution is 20 ~ 30 DEG C.
As preferably, described gardenia extract obtains by the following method: pull control out after cape jasmine being placed in clear water immersion 1 ~ 2h dry, 20 ~ 30min is boiled add the water of 5 ~ 8 times amount again in cape jasmine after, filter, filter after the water adding 5 ~ 8 times amount in filter residue again boils 20 ~ 30min, merge twice filtrate and namely obtain gardenia extract.
As preferably, in step (3), the air-dry technological parameter of cold wind is: cold wind temperature is 10 ~ 15 DEG C, and cold wind wind speed is 1 ~ 3m/s.
Therefore, the present invention has following beneficial effect:
(1) adopt mass concentration be 0.3 ~ 0.5% sodium bicarbonate solution tomato is cleaned, cleaning performance is good, greatly can improve the filming performance of antistaling agent, makes antistaling agent can evenly be attached to tomato surface;
(2) characteristic for tomato is optimized improvement to fresh-keeping film forming solution, the mutual Synergistic of each component in fresh-keeping film forming solution, and safe and efficient, cost is low, and filming performance is good, can improve tomato outward appearance, extends the tomato pr eservation phase;
(3) mode that employing is soaked, cold wind is air-dry carries out coating-film fresh-keeping to tomato, and processing step is simple, and workable, efficiency is high, and equipment investment is few, Environmental Safety, and quality of forming film is good, is applicable to suitability for industrialized production.
Detailed description of the invention
Below by detailed description of the invention, the present invention will be further described.
In the present invention, if not refer in particular to, all percentage is unit of weight, and all devices and raw material all can be buied from market or the industry is conventional, and the method in following embodiment, if no special instructions, is this area conventional method.
Embodiment 1
(1) pretreatment of raw material: select to have no mechanical damage, without rotten spot, has the tomato of the green flower base of a fruit as fresh-keeping object, is after the sodium bicarbonate solution cleaning of 0.4%, drains tomato mass concentration;
(2) soak: the tomato in step (1) is placed in 4 quality doubly, temperature is take out after soaking 15min in the fresh-keeping film forming solution of 25 DEG C, fresh-keeping film forming solution is made up of the component of following mass percent: 0.6% lecithin, 0.06% phytic acid, 1.5% Tween-80, 0.06% konjacmannan, 0.2% xanthans, 0.3% sodium chloride, 0.4% nano silicon, 0.6% glycerine, 0.4% calgon, surplus is gardenia extract, wherein gardenia extract obtains by the following method: cape jasmine is placed in pull control after clear water soaks 1.5h out dry, 22min is boiled add the water of 6 times amount again in cape jasmine after, filter, filter after the water adding 6 times amount in filter residue again boils 22min, merge twice filtrate and namely obtain gardenia extract.
(3) film forming preservation: to the tomato in step (2) carry out cold wind air-dry after, store under being placed in 11 DEG C of environment, the air-dry technological parameter of cold wind is: cold wind temperature is 12 DEG C, and cold wind wind speed is 2m/s.
Embodiment 2
(1) pretreatment of raw material: select to have no mechanical damage, without rotten spot, has the tomato of the green flower base of a fruit as fresh-keeping object, is after the sodium bicarbonate solution cleaning of 0.3%, drains tomato mass concentration;
(2) soak: the tomato in step (1) is placed in 3 quality doubly, temperature is take out after soaking 10min in the fresh-keeping film forming solution of 20 DEG C, fresh-keeping film forming solution is made up of the component of following mass percent: 0.5% lecithin, 0.05% phytic acid, 1% Tween-80, 0.05% konjacmannan, 0.1% xanthans, 0.2% sodium chloride, 0.3% nano silicon, 0.5% glycerine, 0.3% calgon, surplus is gardenia extract, wherein gardenia extract obtains by the following method: cape jasmine is placed in pull control after clear water soaks 1h out dry, 20min is boiled add the water of 5 times amount again in cape jasmine after, filter, filter after the water adding 5 times amount in filter residue again boils 20min, merge twice filtrate and namely obtain gardenia extract.
(3) film forming preservation: to the tomato in step (2) carry out cold wind air-dry after, store under being placed in 10 DEG C of environment, the air-dry technological parameter of cold wind is: cold wind temperature is 10 DEG C, and cold wind wind speed is 3m/s.
Embodiment 3
(1) pretreatment of raw material: select to have no mechanical damage, without rotten spot, has the tomato of the green flower base of a fruit as fresh-keeping object, is after the sodium bicarbonate solution cleaning of 0.5%, drains tomato mass concentration;
(2) soak: the tomato in step (1) is placed in 5 quality doubly, temperature is take out after soaking 20min in the fresh-keeping film forming solution of 30 DEG C, fresh-keeping film forming solution is made up of the component of following mass percent: 1% lecithin, 0.1% phytic acid, 2% Tween-80, 0.1% konjacmannan, 0.3% xanthans, 0.4% sodium chloride, 0.5% nano silicon, 1% glycerine, 0.5% calgon, surplus is gardenia extract, wherein gardenia extract obtains by the following method: cape jasmine is placed in pull control after clear water soaks 2h out dry, 30min is boiled add the water of 8 times amount again in cape jasmine after, filter, filter after the water adding 8 times amount in filter residue again boils 30min, merge twice filtrate and namely obtain gardenia extract.
(3) film forming preservation: to the tomato in step (2) carry out cold wind air-dry after, store under being placed in 15 DEG C of environment, the air-dry technological parameter of cold wind is: cold wind temperature is 15 DEG C, and cold wind wind speed is 1m/s.
Comparative example
Drain after adopting clear water to clean to tomato, store under being placed in 15 DEG C of environment.
Get 10Kg fresh tomato and be evenly divided into A, B, C, D tetra-groups by weight, wherein the tomato of A, B, C group is respectively according to the preservation method process in embodiment 1,2,3, and the tomato of D group is according to the method process of comparative example.Storage measures the organoleptic indicator of each group of tomato sample, hardness, rotting rate, weight-loss ratio and Vitamin C content for 60 days afterwards, and wherein organoleptic indicator is obtained by the pericarp of direct observation tomato and Hua Di color, gloss, plumpness; Hardness adopts the measurement of TG-2 type hardness tester fixed; Rotting rate adopts observation method to measure, rotting rate=(decayed fruit number/storage total fruit number) * 100%; Weight-loss ratio=(weight loss/Initial total weight) * 100%; Vitamin C content adopts determined by ultraviolet spectrophotometry, and unit represents with mg/100g.
Measurement result is as shown in the table:
As can be seen from the above table, the organoleptic indicator of the tomato stored by the preservation method of each embodiment, hardness, vitamin content is all obviously better than comparative example, and rotting rate, weight-loss ratio is starkly lower than comparative example, illustrate that tomato coating-film fresh-keeping method of the present invention effectively can suppress the respiratory rate of tomato, reduce moisture loss, and slow down the loss of tomato Middle nutrition Vitamins C, improve outward appearance and the storage quality of tomato, good to the preservation and freshness effect of tomato, and processing step is simple, workable, efficiency is high, equipment investment is few, Environmental Safety, quality of forming film is good, be applicable to suitability for industrialized production, there is larger using value.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (4)
1. a tomato coating-film fresh-keeping method, is characterized in that, comprises the following steps:
(1) pretreatment of raw material: select to have no mechanical damage, without rotten spot, has the tomato of the green flower base of a fruit as fresh-keeping object, is after the sodium bicarbonate solution cleaning of 0.3 ~ 0.5%, drains tomato mass concentration;
(2) soak: the tomato in step (1) is placed in after fresh-keeping film forming solution soaks 10 ~ 20min and takes out, described fresh-keeping film forming solution is made up of the component of following mass percent: 0.5 ~ 1% lecithin, 0.05 ~ 0.1% phytic acid, 1 ~ 2% Tween-80,0.05 ~ 0.1% konjacmannan, 0.1 ~ 0.3% xanthans, 0.2 ~ 0.4% sodium chloride, 0.3 ~ 0.5% nano silicon, 0.5 ~ 1% glycerine, 0.3 ~ 0.5% calgon, surplus is gardenia extract;
(3) film forming preservation: to the tomato in step (2) carry out cold wind air-dry after, store under being placed in 10 ~ 15 DEG C of environment.
2. a kind of tomato coating-film fresh-keeping method according to claim 1, is characterized in that, in step (2), the mass ratio of tomato and fresh-keeping film forming solution is 1: 3 ~ 5, and the temperature of fresh-keeping film forming solution is 20 ~ 30 DEG C.
3. a kind of tomato coating-film fresh-keeping method according to claim 1, it is characterized in that, described gardenia extract obtains by the following method: pull control out after cape jasmine being placed in clear water immersion 1 ~ 2h dry, 20 ~ 30min is boiled add the water of 5 ~ 8 times amount again in cape jasmine after, filter, filter after the water adding 5 ~ 8 times amount in filter residue again boils 20 ~ 30min, merge twice filtrate and namely obtain gardenia extract.
4. a kind of tomato coating-film fresh-keeping method according to claim 1, is characterized in that, in step (3), the air-dry technological parameter of cold wind is: cold wind temperature is 10 ~ 15 DEG C, and cold wind wind speed is 1 ~ 3m/s.
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| CN106417586A (en) * | 2016-10-20 | 2017-02-22 | 广西神海云峰农业综合开发有限公司 | Coating preservation method for tricholoma matsutake |
| CN106615054A (en) * | 2016-12-16 | 2017-05-10 | 河北省农林科学院石家庄果树研究所 | Storage and fresh-keeping comprehensive treatment method for Huangguan pears |
| CN107347984A (en) * | 2017-07-21 | 2017-11-17 | 广西壮族自治区农业科学院农产品加工研究所 | A kind of passion fruit antistaling agent and preparation method thereof and application |
| CN107373501A (en) * | 2017-08-10 | 2017-11-24 | 广西柳城县绿之缘生态农业科技有限公司 | The processing method of fresh cut vegetables |
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| CN109744476A (en) * | 2019-03-04 | 2019-05-14 | 嘉兴市真真老老食品有限公司 | Zongzi's cooking technique in industrialization large-scale production |
| CN111317022A (en) * | 2020-03-27 | 2020-06-23 | 江西瑞博特生物科技有限公司 | Bioactive preservative and preparation method and application thereof |
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| CN105053173A (en) * | 2015-08-27 | 2015-11-18 | 太仓市永发农场专业合作社 | Tomato preservative |
| CN106359570A (en) * | 2016-10-20 | 2017-02-01 | 广西神海云峰农业综合开发有限公司 | Coating preservation method for agaricus bisporus |
| CN106417586A (en) * | 2016-10-20 | 2017-02-22 | 广西神海云峰农业综合开发有限公司 | Coating preservation method for tricholoma matsutake |
| CN106615054A (en) * | 2016-12-16 | 2017-05-10 | 河北省农林科学院石家庄果树研究所 | Storage and fresh-keeping comprehensive treatment method for Huangguan pears |
| CN106615054B (en) * | 2016-12-16 | 2020-07-31 | 河北省农林科学院石家庄果树研究所 | Comprehensive storage and preservation treatment method for Huangguan pears |
| CN107347984A (en) * | 2017-07-21 | 2017-11-17 | 广西壮族自治区农业科学院农产品加工研究所 | A kind of passion fruit antistaling agent and preparation method thereof and application |
| CN107373501A (en) * | 2017-08-10 | 2017-11-24 | 广西柳城县绿之缘生态农业科技有限公司 | The processing method of fresh cut vegetables |
| CN107771917A (en) * | 2017-11-17 | 2018-03-09 | 东北农业大学 | A kind of osmunda polysaccharides tomato pr eservation agent |
| CN109744476A (en) * | 2019-03-04 | 2019-05-14 | 嘉兴市真真老老食品有限公司 | Zongzi's cooking technique in industrialization large-scale production |
| CN111317022A (en) * | 2020-03-27 | 2020-06-23 | 江西瑞博特生物科技有限公司 | Bioactive preservative and preparation method and application thereof |
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Effective date of registration: 20200702 Address after: 510000 Room 201, No.106, South Sanxiang, Tanwei, Liwan District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Huaren cross border trade Co.,Ltd. Address before: 666108 No.14, manlina village committee, Menghan Town, Jinghong City, Xishuangbanna Dai Autonomous Prefecture, Yunnan Province Patentee before: Xishuangbanna xinjuhuo Agricultural Development Co.,Ltd. |
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Address after: 510000 Room 201, No. 106, nansanxiang, Tanwei, Liwan District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Huowanghuo Brand Management Co.,Ltd. Address before: 510000 Room 201, No. 106, nansanxiang, Tanwei, Liwan District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Huaren cross border trade Co.,Ltd. |
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