Detailed description of the invention
In the present invention, unless otherwise indicated, all percentage and ratio are all in mass.In addition, all number ranges that the present invention describes include end value and can comprise the new number range being combined mutually by the upper and lower bound of scope of disclosure and obtaining.Such as, if the mass percentage disclosing certain component is 10 ~ 30 quality %, preferably 15 ~ 25 quality %, more preferably 20 ~ 23 quality %, be then equivalent to also disclose following number range: 10 ~ 15 quality %, 10 ~ 25 quality %, 10 ~ 20 quality %, 10 ~ 23 quality %, 15 ~ 30 quality %, 15 ~ 20 quality %, 15 ~ 23 quality %, 20 ~ 25 quality %, 23 ~ 25 quality %.
Composition
In the present invention, provide a kind of ice-cream coating grease, it is prepared through ester exchange by camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester of palm oil.
In the present invention, term " ester exchange " refers to the transfer of the carboxyl groups between enzymatic lipid donor and lipid acceptor.
In the present invention, term " transesterify " refers to when presence or absence catalyst, and carboxyl groups is from lipid donor (except free fatty) to the transfer of acyl acceptor (except water)
In the present invention, " catalyst " refers to and presents its native form or be rendered as the catalyst material with the form of mixtures of the carrier prepared according to technology well known by persons skilled in the art or matrix." catalyst " that use in ester exchange reaction can be acidic catalyst, base catalyst, enzyme catalyst etc.
Acidic catalyst refer to as in document the acidic catalyst in Lewis implication that defines, described document comprises the AdvancedOrganicChemistry (Advanced Organic Chemistry) of JerryMARCH, 3rd edition, JohnWiley & Sons, 1985,227th page and content subsequently, or catalyst pointed in this application, includes but not limited to following material: sulfuric acid, phosphoric acid, hydrochloric acid, organic sulfonic acid and carboxylate, iodine, strong Lewis acid type alkoxyl are admired Ti (OR) 4, WO
3/ ZrO
2, SO
4/ ZrO
2, SO
4/ SnO
2.
Base catalyst refer to as in document the base catalyst in Lewis implication that defines, described document comprises the AdvancedOrganicChemistry (Advanced Organic Chemistry) of JerryMARCH, 3rd edition, JohnWiley & Sons, 1985,227th page and content subsequently, or catalyst pointed in this application, includes but not limited to following material: sodium metal, potassium, sodium-potassium-sodium alloy, NaOH, KOH, sodium methoxide, metal oxide and alkaline earth metal compound are (as MgO, ZnO, CeO2, La
2zO
3and CaO), molecular sieve, clay mineral, deacidite (as strong-base anion-exchange resin, as OH type 717 type anion exchange resin), immobilization guanidine class material.
For the enzyme mainly lipase of catalysis grease ester exchange.Lipase is generally divided into randomness (not having stereoselectivity) and selectivity (l, 3-stereoselectivity) two classes.The exchange of randomness lipase-catalyzed grease vinegar can obtain catalytic result similar with conventional chemical catalyst, the vinegar exchange reaction of specific lipase energy catalysis stereoselectivity or fatty acid selectivity.The operable enzyme for the ester exchange of catalysis grease includes but not limited in the present invention: immobilization Pseudomonasfluorescens lipase, immobilised enzymes QLM(obtain from Alcaligenessp.), immobilization 1,3-selectivity enzyme IM(obtains from Rhizomucormiehei), Novozym435.
In the present invention, the catalyst used in ester exchange reaction is preferably sodium methoxide, caustic alcohol.
In a preferred embodiment of the invention, the weight ratio of the hard ester of described camphor tree seed oil, palm-kernel oil, the hard ester of palm oil is 10-30:60-80:1-10, preferably, the weight ratio of described camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester of palm oil is 15-27:65-77:3-8.
Preferably, in the gross weight of described camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester of palm oil for benchmark, the weight of described camphor tree seed oil is 10 % by weight, 11 % by weight, 12 % by weight, 13 % by weight, 14 % by weight, 15 % by weight, 16 % by weight, 17 % by weight, 18 % by weight, 19 % by weight, 20 % by weight, 21 % by weight, 22 % by weight, 23 % by weight, 24 % by weight, 25 % by weight, 26 % by weight, 27 % by weight, 28 % by weight, 29 % by weight, 30 % by weight; The weight of the hard ester of described palm-kernel oil is 60 % by weight, 61 % by weight, 62 % by weight, 63 % by weight, 64 % by weight, 65 % by weight, 66 % by weight, 67 % by weight, 68 % by weight, 69 % by weight, 70 % by weight, 71 % by weight, 72 % by weight, 73 % by weight, 74 % by weight, 75 % by weight, 76 % by weight, 77 % by weight, 78 % by weight, 79 % by weight, 80 % by weight; The weight of described palmitic stearin is 1 % by weight, 2 % by weight, 3 % by weight, 4 % by weight, 5 % by weight, 6 % by weight, 7 % by weight, 8 % by weight, 9 % by weight, 10 % by weight.
In a preferred embodiment of the invention, dehydrate after camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester mixing of palm oil before described step of transesterification, preferably dehydrate at 90-120 DEG C.By rich mixture through dehydrating process, follow-up ester exchange reaction can be beneficial to and carry out.
In a preferred embodiment of the invention, after described step of transesterification, also comprise the step of ester exchange offspring being carried out refining, preferably, described refining for ester exchange offspring being carried out filter, coming unstuck, depickling, decolouring, deodorization process.
As known to the skilled person: crude oil needs through refining treatment, corresponding polished fat could be obtained.The steps such as usual refinement step comprises filtration, comes unstuck, depickling, decolouring, deodorization, above-mentioned steps is the routine operation in this area.
In a preferred embodiment of the invention, the camphor tree seed oil used is refining camphor tree seed oil, the hard ester of described palm-kernel oil is carry palm-kernel oil dividing of iodine value 1 ~ 8, the hard ester of preferred palm-kernel oil is carry palm-kernel oil dividing of iodine value 2 ~ 6, the hard ester of described palm oil is carry palm oil dividing of iodine value 10 ~ 25, and the hard ester of preferred palm oil is carry palm oil dividing of iodine value 13 ~ 20.
In a preferred embodiment of the invention, the refining camphor tree seed oil of use for by Camphor Tree Seeds crude oil being carried out refining treatment acquisition, preferred refining treatment step comprises filtration, comes unstuck, depickling, decolouring, deodorization; Preferably, described Camphor Tree Seeds crude oil is for broken by Camphor Tree Seeds and after removing pulp, adopt organic solvent extraction to obtain, preferred organic solvent is benzinum or ether.
In a preferred embodiment of the invention, the hard ester of palm-kernel oil of use is carried dividing of acquisition for palm-kernel oil warp point and is put forward palm-kernel oil component, and its iodine value is 1 ~ 8, and preferably, iodine value is 2 ~ 7, is more preferably 2 ~ 6, and preferred 3 ~ 5; Preferably, the iodine value of the hard ester of described palm-kernel oil is 1,2,3,4,5,6,7 or 8.
In a preferred embodiment of the invention, the hard ester of palm oil of use is carried dividing of acquisition for palm oil warp point and is carried palm oil fractions, and its iodine value is 10 ~ 25, is preferably 11 ~ 24, is more preferably 13 ~ 20, is more preferably 15 ~ 20; Preferably, the iodine value of the hard ester of described palm oil is 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24 or 25.
Preparation method
The preparation method of ice-cream coating grease provided by the invention, comprises the following steps:
By camphor tree seed oil, the hard ester of palm-kernel oil and the hard ester admixture of palm oil, under esterification catalyst existent condition, in 60-100 DEG C of reaction 30-60 minute.
In a preferred embodiment of the invention, the weight ratio of the hard ester of described camphor tree seed oil, palm-kernel oil, the hard ester of palm oil is 10-30:60-80:1-10, preferably, the weight ratio of described camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester of palm oil is 15-27:65-77:3-8.
Preferably, in the gross weight of described camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester of palm oil for benchmark, the weight of described camphor tree seed oil is 10 % by weight, 11 % by weight, 12 % by weight, 13 % by weight, 14 % by weight, 15 % by weight, 16 % by weight, 17 % by weight, 18 % by weight, 19 % by weight, 20 % by weight, 21 % by weight, 22 % by weight, 23 % by weight, 24 % by weight, 25 % by weight, 26 % by weight, 27 % by weight, 28 % by weight, 29 % by weight, 30 % by weight; The weight of the hard ester of described palm-kernel oil is 60 % by weight, 61 % by weight, 62 % by weight, 63 % by weight, 64 % by weight, 65 % by weight, 66 % by weight, 67 % by weight, 68 % by weight, 69 % by weight, 70 % by weight, 71 % by weight, 72 % by weight, 73 % by weight, 74 % by weight, 75 % by weight, 76 % by weight, 77 % by weight, 78 % by weight, 79 % by weight, 80 % by weight; The weight of described palmitic stearin is 1 % by weight, 2 % by weight, 3 % by weight, 4 % by weight, 5 % by weight, 6 % by weight, 7 % by weight, 8 % by weight, 9 % by weight, 10 % by weight.
In a preferred embodiment of the invention, described catalyst is acidic catalyst, base catalyst and/or enzyme catalyst.Preferably, described acidic catalyst comprises sulfuric acid, phosphoric acid, hydrochloric acid, organic sulfonic acid and carboxylate, iodine, by force Lewis acid type alkoxyl admire Ti (OR) 4, WO
3/ ZrO
2, SO
4/ ZrO
2, SO
4/ SnO
2in one or more; Base catalyst comprise in sodium metal, potassium, sodium-potassium-sodium alloy, NaOH, KOH, sodium methoxide, caustic alcohol, metal oxide and alkaline earth metal compound, molecular sieve, clay mineral, deacidite, immobilization guanidine class material one or more, preferably, described alkaline earth metal compound comprises MgO, ZnO, CeO
2, La
2zO
3, one or more in CaO, preferably, described deacidite comprises strong-base anion-exchange resin, is preferably OH type 717 type anion exchange resin; Described enzyme catalyst is lipase, and preferably, described lipase is immobilization Pseudomonasfluorescens lipase, immobilised enzymes QLM, immobilization 1,3-selectivity enzyme IM, Novozym435.
In a preferred embodiment, described catalyst is sodium methoxide and/or caustic alcohol.
In a preferred embodiment of the invention, dehydrate after camphor tree seed oil, the hard ester of palm-kernel oil, the hard ester mixing of palm oil before described step of transesterification, preferably dehydrate at 90-120 DEG C.
In a preferred embodiment of the invention, after described step of transesterification, also comprise the step of refining, preferably, described refining for ester exchange offspring being carried out filter, coming unstuck, depickling, decolouring, deodorization process.
In a preferred embodiment of the invention, before described refining, also comprise the step being carried out by ester exchange offspring dehydrating.
In a preferred embodiment of the invention, described camphor tree seed oil is refining camphor tree seed oil, and the hard ester of described palm-kernel oil is carry palm-kernel oil dividing of iodine value 1 ~ 8, and the hard ester of described palm oil is carry palm oil dividing of iodine value 10 ~ 25.
Purposes
Ice-cream coating grease provided by the invention can be used as chocolate mass.
Ice-cream coating grease provided by the invention can be used for making ice-cream coating.
Ice-cream coating grease provided by the invention can be used as making ice cream.
In the present invention, " iodine number " represents the grams with the unsaturated bond in 100 grams of greases and the iodine needed for Iod R, is the one tolerance of fatty degree of unsaturation.Iodine number is higher then to illustrate in grease that unsaturated fatty acid content is higher or its degree of unsaturation is higher.
After reading the foregoing specification, within the scope that those skilled in the art can be contained in this area, improvement to a certain degree, alternative and combination are carried out to the above embodiment, thus implement the present invention and obtain similar technique effect.All these are improved, substitute and combination is also all included within the scope of the invention.
Carry out further discussing in detail, so that people more grok the present invention to the preferred embodiment of the present invention below in conjunction with specific embodiment.But it is pointed out that following specific embodiment is only used for illustrational object, can not form any restriction to protection scope of the present invention, scope of the present invention is only defined by the claims.
Raw material
In following embodiment of the present invention, the coconut oil used is purchased from Southseas Specialty Fats Industrial (Shanghai) Co., Ltd., palm-kernel oil is purchased from Southseas Specialty Fats Industrial (Shanghai) Co., Ltd., fractionated palm oil carries intermediate species PMF, and purchased from Southseas Specialty Fats Industrial (Shanghai) Co., Ltd., (PMF divides in the middle of palm oil to carry product, iodine value (IV) is 43-50), Refined palm kernel oil is purchased from Southseas Specialty Fats Industrial (Shanghai) Co., Ltd., and refined palm oil is purchased from Southseas Specialty Fats Industrial (Shanghai) Co., Ltd..
In following embodiment of the present invention, the cocoa power of use is purchased from Jia Ji, and Icing Sugar is purchased from commercially available, and skimmed milk power is purchased from commercially available, and lecithin is purchased from beneficial Hai Jialijinhai grain and oil.
Equipment
In following embodiment of the present invention, ball mill is purchased from German winner company; Conche is purchased from Capco company.
In following embodiment of the present invention, refining process is as follows: according to chocolate formula, mixture is put into ball mill at 50 DEG C, rotating speed 6.5 grades mixing 20min, 3 grades of mixing 30min, material particles is made to reach 20 ~ 25 μm, finally product is put into 65 DEG C of refining 12h on conche, obtain chocolate product.
Detection method
In following embodiment of the present invention, detection method is as follows:
Fusing point detects: AOCSOfficialMethodCc3-25.
In grease, the detection method of solid fat content (SFC%) is as follows:
Rich mixture to be detected is placed 30min in 60 DEG C, then this rich mixture is positioned over 0 DEG C one hour, then, after being placed on 10 DEG C, 20 DEG C, 25 DEG C, 30 DEG C, 35 DEG C, 40 DEG C half an hour respectively, this grease or rich mixture solid fat content is at different temperatures measured.
The detection method of fat crystals speed is as follows:
Rich mixture to be detected is placed 30min at 60 DEG C, then this rich mixture is positioned over 0 DEG C one hour, then to place at 5 DEG C after 30min, measure the solid fat content of this rich mixture, obtain solid fat content SFC.
Rich mixture to be detected is placed 30min in 60 DEG C, then this rich mixture is positioned over 5 DEG C, and respectively the 2nd, 4,6,8, measure the solid fat content of grease in 10min, obtain 2,4,6,8, solid fat content SFC2, SFC4, SFC6, SFC8, SFC10 of 10min.
With solid fat content SFC2, SFC4, SFC6, SFC8, SFC10min for molecule, Gu fat content SFC is denominator, both be divided by obtain this rich mixture at 5 DEG C the 2nd, 4,6,8, the crystalline rate of 10min.
The detection method that ice-cream coating slurry does not drip is as follows:
Environment is at 20 DEG C around, is coated in by ice-cream coating sauce above ice cream ice cream, timing after coating completely.Ice-cream coating sauce can drip rapidly due to Action of Gravity Field, and after certain hour, ice-cream coating outer surface can begin to take shape crystallization, and slurry can not continue drippage after forming section stable crystalline.The time that timing is not dripped up to slurry is dripped, for total ice-cream coating slurry does not drip the time from slurry.
The detection method that ice-cream coating slurry solidifies completely is as follows:
Timing when dripping from ice-cream slurry is until ice-cream coating surface size forms the time on dry surface, and be embodied in and adopt the contact of transparent metallized film, not having slurry to stick to film surface, is the time that ice-cream coating slurry solidifies completely.
Non-fusibility is tested:
Chocolate formula: cocoa power 5%, Icing Sugar 45%, skimmed milk power 15%, grease 35%, lecithin 0.5%.By above formula, each component mixed, obtain respective mixtures, then each mixture is put into ball mill at 50 DEG C respectively, rotating speed 6.5 grades mixing 5min, third gear 60min, until particle size reaches 20-25 μm, obtain chocolate coating slurry.Then by chocolate coating slurry on conche in 65 DEG C of refining 12h, obtain chocolate mass.The chocolate mass prepared is spread upon on commercially available ice cream ice cream respectively, obtains ice-cream chocolate coating product.
Under steady temperature (30 DEG C), ice-cream coating product is placed on the screen cloth in 30 DEG C of baking ovens, and starts timing simultaneously.Placing container off the net, weigh the Ice Cream Quality melted when 30min, 60min, Melting resistance represents with thawing rate, and thawing rate is lower, then Melting resistance is better.The computing formula of thawing rate is as follows: