CN104322719A - Method for preventing peony seed oil from oxidization by using walnut production wastes - Google Patents
Method for preventing peony seed oil from oxidization by using walnut production wastes Download PDFInfo
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- CN104322719A CN104322719A CN201410583482.8A CN201410583482A CN104322719A CN 104322719 A CN104322719 A CN 104322719A CN 201410583482 A CN201410583482 A CN 201410583482A CN 104322719 A CN104322719 A CN 104322719A
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Abstract
The invention discloses a method for preventing peony seed oil from oxidization by using walnut production wastes, belonging to the technical field of grease antioxidants. According to the method, walnut production waste extract is added into the peony seed oil; walnut production wastes are walnut shells and/or walnut green shells; and meanwhile, the walnut shells are added in a preparation process of the peony seed oil and the oxidization of the oil in a preparation process is avoided. The walnut shell production wastes are sufficiently utilized so that the waste utilization effect is realized and the oil anti-oxidization cost is greatly reduced; and meanwhile, the pollution to the environment is reduced.
Description
Technical field
The present invention relates to the technical field of oil antioxidant, be specifically related to a kind of method utilizing walnut production discarded object to prevent peony seed oil to be oxidized.
Background technology
In the walnut of fresh harvesting, the weight of moisture, green peel of walnut and Cortex walnut accounts for more than 70% of gross weight, and remainder is only the walnut kernel of our every day use.Therefore, in walnut process, produce a large amount of discarded objects, mainly comprise green peel of walnut and walnut shell.
Green peel of walnut also known as pericarpium juglandis, the thick green pericarp of the one deck for walnut outside.China's walnut cultivated area occupies first place in the world, and green peel of walnut annual production is at 350,000 more than t.After Walnut Fruit is gathered, the rascal outside nut should be taken off as early as possible.A large amount of rascal become dumping in field, the edge of a field or limes marginis contaminated environment, if be used to it, not only can prevent the pollution of the environment, the income of orchard worker can also be increased.At present, few to the bibliographical information of the processing of green peel of walnut, comprehensive utilization aspect both at home and abroad.
Prevent the oxidative rancidity of grease and fat-rich food, the most effective way adds antioxidant.Although the antioxidant action effect of Prof. Du Yucang is remarkable, its security is the problem that the public worries always.The results of animal of high dose shows, TBHQ (TBHQ), dibutyl hydroxy toluene (BHT), butylated hydroxy anisole (BHA) can cause obvious hepatomegaly.
Tea Polyphenols is natural antioxidant, but its cost is higher, can increase the cost of grease in the application.Green peel of walnut is the discarded object after walnut is gathered, and is generally directly discarded into roadside, river bank, is not utilized effectively, be not substantially worth, and compared with Tea Polyphenols, has very large cost advantage.
Therefore, many countries limit the use of Prof. Du Yucang antioxidant in succession.Two nearest ten years, people turn to sight and come from vegeto-animal natural, safe antioxidant.Natural can not only prevent the oxidation of grease system in food, and can prevent the harm of people's interior free yl, and delay senility the various DDs caused, as cancer, cardiovascular and cerebrovascular disease etc.
Peony seed oil is approved as new resource food by the Ministry of Public Health in 2011, and output increases year by year.The unsaturated fatty acid content of peony seed oil is higher, and up to more than 92%, linolenic acid content, more than 40%, exceedes the olive oil being described as " liquid golden ", easily causes oxidation deterioration.The anti-oxidant general of current peony seed oil adopts conventional Prof. Du Yucang antioxidant, the exploitation of natural, safe antioxidant and use there is not yet research report and product occurs.
This research finds, walnut shell and walnut peel extract have the good effect preventing peony seed oil to be oxidized, and this is significant for preventing peony seed oil to be oxidized efficiently and safely.
Summary of the invention
The object of the present invention is to provide a kind of method utilizing walnut production discarded object to prevent peony seed oil to be oxidized.
The technical solution adopted in the present invention is:
The method utilizing walnut production discarded object to prevent peony seed oil to be oxidized, is characterized in that, adds walnut production discarded object extract in peony seed oil, and described walnut production discarded object is walnut shell and/or green peel of walnut.
Preferably, in peony seed oil, the addition of walnut production discarded object extract is 15-120mg/kg oil.
Preferably, the addition of described walnut shell extract is 15-60mg/kg oil; The addition of walnut peel extract is 15-60mg/kg oil.
Preferably, the Extraction solvent of described walnut production discarded object extract is food-grade acetone or alcohol, and described walnut production discarded object extract is the powdered substance obtained after rotary evaporation and freeze drying after Extraction solvent extracts.
Preferably, in peony seed oil production process, walnut shell is added.
Preferably, the walnut shell added in peony seed oil production process needs first broken, mixes before parch with peony seeds benevolence.
Preferably, the addition of walnut shell is 0.5-1.5%.
Preferably, the described method utilizing walnut production discarded object to prevent peony seed oil to be oxidized comprises the following steps:
1. take walnut shell, be crushed to soya bean size; Take walnut production discarded object extract simultaneously;
2. get peony seeds, clear up successively, take out impurity, peel off, Kernel-hull separation, remove seed shell, obtain peony seeds benevolence;
3. by peony seeds benevolence and step 1. in mix through the walnut shell of break process, carry out parch successively, squeezing, vacuum filtration, clear crude oil, hydration degum, alkali-refining deacidification, adsorption bleaching, deodorization, obtains peony seed oil, the peony seed oil getting 20wt% mixes with walnut production discarded object extract, ultrasonic 5min, then remains the peony seed oil mixing of 80wt%, obtains peony seed oil product oil.
Beneficial effect of the present invention:
(1) under same measured condition, adopt the induction time measured by method of the present invention to be about 2 times of the induction time not using extract, shelf life can extend more than 3 times.
(2) what method provided by the invention adopted is plant extracts, and be natural materials, security is high, and has certain physiological function, as anticancer, scavenging free radicals, delays senility, reduces the effects such as cardiovascular and cerebrovascular disease occurrence probability.
(3) extract used in the present invention, this is as faint yellow extremely yellow, basically identical with the color of peony seed oil, can not produce harmful effect after interpolation to peony seed oil outward appearance.
(4) extract used in the present invention, raw material, from walnut production discarded object, can reach the effect of twice laid, meanwhile, greatly reduces the anti-oxidant cost of peony seed oil.
(5) the present invention utilizes the method that walnut production discarded object prevents peony seed oil to be oxidized, and adds walnut shell, prevent the oxidation in peony seed oil production process, thus prevent peony seed oil oxidation effectiveness better in the process that peony seed oil is produced.
Accompanying drawing explanation
The ability of the anti-peony seed oil oxidation of accompanying drawing 1 walnut peel extract;
The ability of the anti-peony seed oil oxidation of accompanying drawing 2 walnut shell extract.
Detailed description of the invention
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples, embodiment should not regard as limiting the scope of the present invention.
Can adopting of following examples is tested with the following method:
(1) mensuration of antioxidant effect adopts Schaal baking box method.Under first sample (add the peony seed oil of walnut shell and/or walnut peel extract, do not add the peony seed oil of walnut shell and/or walnut peel extract) being placed in 60 ± 1 DEG C of constant temperatures respectively, its peroxide value of sampling and measuring (POV) at regular intervals, reach time needed for 12meq/kg for induction time and standard of comparison with peroxide value, calculate the Antioxidative Factors F of induction period and antioxidant.
PF=T
oil sample/ T
contrast
In formula, T
oil samplefor the oil sample POV value adding antioxidant is raised to 12meq/kg required time; T
contrastfor contrast oil sample POV value is raised to 12meq/kg required time.
With peroxide value, induction time, Antioxidative Factors PF for index evaluation extract is to the antioxidant effect of peony seed oil.
(2) mensuration of peroxide value measures by the method for standard GB/T/J5009.37-1996.
Embodiment 1: walnut peel extract is to the antioxidant effect of peony seed oil
(1) preparation of walnut peel extract
After the cleaning of fresh green peel of walnut, extract according to green peel of walnut weight and the ratio that ethanol or food-grade acetone volume are 1:30 ~ 200, adopt ultrasonic assistant extraction, extraction time is 0.5 ~ 2h.Filter afterwards, carry out rotary evaporation by after filtrate mobile phone, concentrated, then put into vacuum freeze drier, after 8h, obtain solid powdery extract.
(2) interpolation of extract and antioxidant effect
By 15,30, the addition of 60mg/kg oil adds the peel extract of Different Weight respectively in peony seed oil, to be placed under 60 ± 1 DEG C of constant temperatures accelerated oxidation 21 days, its peroxide value of sampling analysis measuring, is shown in accompanying drawing 1.
(3) forecasting shelf life of peony seed oil
In table 1 and 2.
Embodiment 2: walnut shell extract is to the antioxidation of peony seed oil
(1) preparation of walnut shell extract
The ratio being 1:20 ~ 100 according to walnut shell weight and ethanol or food-grade acetone volume is extracted, and adopt ultrasonic assistant to extract, extraction time is 1 ~ 3h.Filter afterwards, carry out rotary evaporation by after filtrate mobile phone, concentrated, then put into vacuum freeze drier, after 8h, obtain solid powdery extract.
(2) interpolation of extract and antioxidant effect
By 15,30, the addition of 60mg/kg oil adds the walnut shell extract of Different Weight respectively in peony seed oil, to be placed under 60 ± 1 DEG C of constant temperatures accelerated oxidation 21 days, its peroxide value of sampling analysis measuring, is shown in accompanying drawing 2.
(3) forecasting shelf life of peony seed oil
In table 1 and table 2.
Table 1 temperature and shelf life relation
| Temperature (DEG C) | 60 | 50 | 40 | 30 | 20 |
| Shelf life coefficient | 1 | 2 | 4 | 8 | 16 |
The prediction of shelf-life of sample peony seed oil respectively organized by table 2
Claims (8)
1. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized, is characterized in that, adds walnut production discarded object extract in peony seed oil, and described walnut production discarded object is walnut shell and/or green peel of walnut.
2. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized according to claim 1, is characterized in that, in peony seed oil, the addition of walnut production discarded object extract is 15-120mg/kg oil.
3. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized according to claim 2, is characterized in that, the addition of described walnut shell extract is 15-60mg/kg oil; The addition of walnut peel extract is 15-60mg/kg oil.
4. according to the arbitrary described method utilizing walnut production discarded object to prevent peony seed oil to be oxidized of claim 1-3, it is characterized in that, the Extraction solvent of described walnut production discarded object extract is food-grade acetone or alcohol, and described walnut production discarded object extract is the powdered substance obtained after rotary evaporation and freeze drying after Extraction solvent extracts.
5. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized according to claim 1, is characterized in that, in peony seed oil production process, add walnut shell.
6. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized according to claim 5, is characterized in that, the walnut shell added in peony seed oil production process needs first broken, mixes before parch with peony seeds benevolence.
7. the method utilizing walnut production discarded object to prevent peony seed oil to be oxidized according to claim 6, is characterized in that, the addition of walnut shell is 0.5-1.5%.
8., according to the arbitrary described method utilizing walnut production discarded object to prevent peony seed oil to be oxidized of claim 1-7, it is characterized in that, comprise the following steps:
1. take walnut shell, be crushed to soya bean size; Take walnut production discarded object extract simultaneously;
2. get peony seeds, clear up successively, take out impurity, peel off, Kernel-hull separation, remove seed shell, obtain peony seeds benevolence;
3. by peony seeds benevolence and step 1. in mix through the walnut shell of break process, carry out parch successively, squeezing, vacuum filtration, clear crude oil, hydration degum, alkali-refining deacidification, adsorption bleaching, deodorization, obtains peony seed oil, the peony seed oil getting 20wt% mixes with walnut production discarded object extract, ultrasonic 5min, then remains the peony seed oil mixing of 80wt%, obtains peony seed oil product oil.
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| CN107674753A (en) * | 2017-09-30 | 2018-02-09 | 衢州刘家香食品有限公司 | A kind of processing method of walnut oil |
| CN109430432A (en) * | 2018-10-24 | 2019-03-08 | 云南农业大学 | A kind of natural being added in walnut oil and its application |
| CN112704211A (en) * | 2020-12-30 | 2021-04-27 | 华中农业大学 | Method for preparing low-fat walnut sauce by ball milling |
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| CN109430432A (en) * | 2018-10-24 | 2019-03-08 | 云南农业大学 | A kind of natural being added in walnut oil and its application |
| CN112704211A (en) * | 2020-12-30 | 2021-04-27 | 华中农业大学 | Method for preparing low-fat walnut sauce by ball milling |
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Application publication date: 20150204 |