JP2007282606A - Interesterified oil, and plastic oil-and-fat composition using the same as hard stock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide interesterified oil having less transisomer content, and bringing excellent physical properties as hard stock use for a plastic oil-and-fat composition, and to provide a plastic oil-and-fat composition using the interesterified oil. <P>SOLUTION: (1) The non-selective interesterified oil has constituent fatty acid substantially comprising saturated fatty acid, 10-30 wt.% of 12C saturated fatty acid, 2-10 wt.% of ≥22C saturated fatty acid, constituent fatty acid remaining substantially comprising palmitic acid (as P hereinafter) and stearic acid (as S hereinafter), and a relation of S/P≥3. (2) The interesterified oil has ≥85 wt.% of saturated fatty acid in the constituent fatty acid. (3) The interesterified oil is used for hard stock. (4) The plastic oil-and-fat composition comprises using the interesterified oil as the hard stock. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a transesterified oil and a plastic fat composition using the same as a hard stock.

Conventionally, oils and fats blended with liquid oil that is liquid at room temperature using hardened oil as a hard stock have been used for plastic oil and fat compositions such as margarine and shortening. However, in recent years, there has been a demand for an oil and fat composition in which the amount of trans isomer contained in the hardened oil is reduced or no hardened oil is used. Palm oil can be used as a vegetable hard stock that does not contain a trans isomer that can be generally used, but is poor in quality as a plastic oil and fat such as graining. In particular, roll-in margarine used for croissants and Danish pastries has sheet-like physical properties when making margarine, spreads along with the dough during roll-in, does not crack, and oils and fats do not melt in the proofing bread product. There is a demand for high functionality that the layer is not collapsed and its mouthfeel is good, and improvements in the general market are required.

Fats and oils obtained by preparing a ratio containing saturated fatty acids, saturated fatty acids of C12 or less, saturated fatty acids of C20 or more within a predetermined range as non-selective transesterification reaction as a conventional fish oil substitute oil and fat composition Although there is a composition, it is not mentioned as a hard stock of roll-in margarine (Patent Documents 1 and 2). In addition, there is an oil and fat composition obtained by preparing a ratio containing saturated fatty acids of C14 or lower and C20 or higher within a predetermined range and non-selective transesterification, but the ratio of palmitic acid and stearic acid is described (Patent Document 3). As a roll-in fat and oil composition, there is an oil and fat composition in which milk fat is blended with non-selective transesterified oil of fat and oil containing C18 or higher fatty acid and fat and oil containing C14 or lower, but the composition of C22 is described. No (Patent Document 4). An edible fat spread is a transesterified oil of high lauric rapeseed oil and fat containing at least 40% saturated fatty acid, and at least 80% of the saturated fatty acid is C16-18, and a fat composition having a maximum of 60% C16 There is no mention of C22 blending (Patent Document 5).
JP2005-113153 JP2005-120386 JP-A-9-165595 JP2002-253117 11-506016

The problem to be solved by the present invention is to develop a transesterified fat and oil composition that has a low trans isomer content and provides good physical properties for use as a hard stock of a plastic oil and fat composition, and to develop a plastic oil and fat composition using the same. That is.

As a result of diligent investigations for solving these problems, the present inventors have composed fatty acids substantially consisting of saturated fatty acids, C12 is 10-30 wt%, C22 is 2-10 wt%, saturated Used as hard stock of roll-in margarine in non-selective transesterification oil with S / P ≧ 3, where the remainder of the fatty acid consists essentially of palmitic acid (hereinafter referred to as P) and stearic acid (hereinafter referred to as S) In some cases, the bread-making properties and bread quality will be good, and even if it is used in fats and oils for filling such as butter cream produced by aeration of margarine used in baked confectionery, etc., it will have good mouthfeel and heat resistance As a result, the present invention has been completed.

That is, the present invention
(1) The constituent fatty acid is substantially composed of a saturated fatty acid, C12 is 10 to 30% by weight, C22 is 2 to 10% by weight, and the remainder of the saturated fatty acid is substantially palmitic acid (hereinafter referred to as P) and stearic acid (Hereinafter referred to as S), a non-selective transesterified oil having S / P ≧ 3.
(2) The transesterified oil according to (1), wherein the saturated fatty acid in the constituent fatty acid is 85% or more.
(3) The transesterified oil according to (1), which is used for hard stock.
(4) A plastic fat composition using the transesterified oil according to (1) as a hard stock.

When used as a hard stock for roll-in margarine, the bread-making property and the quality of the bread are good. In addition, when used as a filling oil such as butter cream, the mouthfeel and heat resistance are good.

The non-selective transesterified oil suitable as a hard stock in the present invention is prepared by non-selective transesterification with a metal catalyst such as sodium methylate or a randomized transesterified lipase. In this transesterified oil, the constituent fatty acid is substantially composed of a saturated fatty acid, C12 is 10 to 30% by weight, C22 is 2 to 10% by weight, and the remainder of the saturated fatty acid is substantially palmitic acid (hereinafter referred to as P). And transesterified oil consisting of stearic acid (hereinafter referred to as S) and S / P ≧ 3.
When C12 is less than 10% by weight, the roll-in margarine is particularly weak when used in confectionery and bakery applications. Margarine is too soft to manufacture and cannot be made into a sheet. If C22 is less than 2% by weight, the stiffness of margarine will be weak, and if it exceeds 10% by weight, the margarine will be hard and the mouthfeel will be poor. Further, when S / P <3, there is a possibility that graining is likely to occur in margarine.

The transesterified oil preferably contains 85% or more of saturated fatty acids in the constituent fatty acids. When it is less than 85%, in the margarine for roll-in, there is separation of liquid oil when the dough is spread.

The transesterified oil is preferably used for hard stock applications.

The plastic fat composition using non-selective transesterified oil as a hard stock can be used for confectionery such as margarine, fat spread, shortening, butter cream, and bread making. These plastic fat compositions are composed of high melting point fats and liquid oils (oils that are liquid at room temperature of 20 to 25 ° C.), and in many cases further contain medium melting point fats, but the transesterified oil in the present invention has a high melting point. Used as fat (hard stock). The middle melting point fats and oils herein are semi-solid fats and oils having a melting point lower than that of the hard stock, and usually have a rising melting point of 20 to 35 ° C. and a trans isomer content of 5% or less. The blending ratio of the high melting point fat, the middle melting point fat, and the liquid oil is not limited, but is desirably high melting point fat / medium melting point fat / liquid oil = 5 to 100% / 0 to 95% / 0 to 95%, and more desirably. Is high melting point oil / medium melting point fat / liquid oil = 5-50% / 0-85% / 10-70%.

Roll-in margarine can be produced by a known method. To describe a typical method, first, an oil phase part containing a lipophilic emulsifier and a water phase part to which skim milk powder, salt and sugar are added are heated and mixed. To pre-emulsify. After preliminary emulsification, it can be produced by cooling a combinator, perfector, complexor, etc., or by a mixer.

Examples of the lipophilic emulsifier include lecithin, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, sorbitan fatty acid ester, and the like, among the conventionally known emulsifiers, and emulsifiers having a low HLB. May be used.

Examples and Comparative Examples will be illustrated below to further clarify the effects of this discovery, but these are merely examples and the present invention is not particularly limited.

<Preparation of hard stock 1>
Mixing 55 parts of rapeseed oil (iodine number 117), 10 parts of palm oil (iodine number 52), 25 parts of palm kernel oil (iodine number 18) and 10 parts of Hyelsin rapeseed oil (C22 content 52.2%), sodium methylate After performing non-selective transesterification using as a catalyst, it was washed with water, dehydrated, extremely cured using nickel as a catalyst, and purified to obtain an extremely cured transesterified oil. This extremely hardened transesterified oil was hard stock 1, C12 was 11.9% by weight, and C22 was 5.5% by weight. S / P = 7.0 and saturated fatty acid was 100%.

<Preparation of hard stock 2>
40 parts of rapeseed oil, 10 parts of palm oil, 40 parts of palm kernel oil and 10 parts of Hyelin rapeseed oil are mixed, and after non-selective transesterification using sodium methylate as a catalyst, it is washed with water, dehydrated, and extremely cured using nickel as a catalyst. And purified to obtain an extremely hardened transesterified oil. This extremely hardened transesterified oil was hard stock 2, C12 was 19.1% by weight, and C22 was 5.4% by weight. S / P = 5.5, and saturated fatty acid was 100%.

<Preparation of hard stock 3>
After mixing 50 parts of rapeseed oil, 40 parts of palm kernel oil, and 10 parts of Hyelin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, extreme curing using nickel as a catalyst, and purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was Hard Stock 3, C12 was 19.0% by weight, and C22 was 5.5% by weight. S / P = 9.7 and saturated fatty acid was 100%.

<Preparation of hard stock 4>
After mixing 55 parts of rapeseed oil, 40 parts of palm kernel oil and 5 parts of Hyelin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, extreme curing using nickel as a catalyst, and purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was Hard Stock 4, C12 was 19.0% by weight, and C22 was 2.9% by weight. S / P = 10.0 and saturated fatty acid was 100%.

<Preparation of hard stock 5>
After mixing 45 parts of rapeseed oil, 40 parts of palm kernel oil and 15 parts of Hyelsin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, extreme hardening using nickel as a catalyst, and purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was used as hard stock 5, C12 was 19.0% by weight, and C22 was 8.1% by weight. S / P = 9.3 and saturated fatty acid was 100%.

<Preparation of hard stock 6>
After mixing 35 parts of rapeseed oil, 55 parts of palm kernel oil and 10 parts of Hyelin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, extreme hardening using nickel as a catalyst, purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was hard stock 6, C12 was 26.2% by weight, and C22 was 5.4% by weight. S / P = 7.2 and saturated fatty acid was 100%.

<Preparation of hard stock 7>
40 parts super hardened rapeseed oil (iodine number 1.2), 40 parts super hardened palm kernel oil (iodine number 0.6), 10 parts super hardened hay rapeseed oil (iodine number 0.6), high oleic sunflower oil (81. oleic acid). 7%) 10 parts were mixed and subjected to non-selective transesterification using sodium methylate as a catalyst, followed by purification to obtain a transesterified oil. This transesterified oil was designated as hard stock 7, and C12 was 19.0% by weight and C22 was 5.4% by weight. S / P = 8.3 and saturated fatty acid was 91%.

<Preparation of hard stock 8>
30 parts of extremely hardened rapeseed oil, 40 parts of extremely hardened palm kernel oil, 10 parts of extremely hardened Hyelsin rapeseed oil, 20 parts of high oleic sunflower oil (iodine value 85.7, oleic acid 81.7%) are mixed with sodium methylate as a catalyst. After non-selective transesterification, purification was performed to obtain a transesterified oil. This transesterified oil was designated as hard stock 8, C12 was 19.0% by weight, and C22 was 5.2% by weight. S / P = 6.9, and saturated fatty acid was 82%.

<Preparation of hard stock 9>
After mixing 65 parts of rapeseed oil, 10 parts of palm oil, 15 parts of palm kernel oil and 10 parts of Hyelsin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, and extremely curing using nickel as a catalyst And purified to obtain an extremely hardened transesterified oil. This extremely hardened transesterified oil was Hard Stock 9, C12 was 7.2% by weight, and C22 was 5.5% by weight. S / P = 8.1 and saturated fatty acid was 100%.

<Preparation of hard stock 10>
After mixing 20 parts of rapeseed oil, 70 parts of palm kernel oil, and 10 parts of Hyelin rapeseed oil, after non-selective transesterification using sodium methylate as a catalyst, washing and dehydrating, extremely curing and purifying using nickel as a catalyst Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was Hard Stock 10, C12 was 33.3% by weight, and C22 was 5.3% by weight. S / P = 5.1 and saturated fatty acid was 100%.

<Preparation of hard stock 11>
After mixing 60 parts of rapeseed oil and 40 parts of palm kernel oil, non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, extreme curing using nickel as a catalyst, refining and ultra-curing transesterification Got oil. This extremely hardened transesterified oil was hard stock 11, C12 was 19.0% by weight, and C22 was 0.3% by weight. S / P = 10.4 and saturated fatty acid was 100%.

<Preparation of hard stock 12>
After mixing 35 parts of rapeseed oil, 40 parts of palm kernel oil, and 25 parts of Hyelin rapeseed oil, non-selective transesterification using sodium methylate as a catalyst, washing and dewatering, ultra-hardening using nickel as a catalyst, purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was used as hard stock 12, C12 was 19.0% by weight, and C22 was 13.2% by weight. S / P = 8.6 and saturated fatty acid was 100%.

<Preparation of hard stock 13>
After mixing 50 parts of palm oil, 40 parts of palm kernel oil and 10 parts of Hyelin rapeseed oil, after performing non-selective transesterification using sodium methylate as a catalyst, washing with water, dehydration, and extremely curing using nickel as a catalyst for purification Thus, an extremely hardened transesterified oil was obtained. This extremely hardened transesterified oil was used as hard stock 13. C12 was 19.1% by weight, and C22 was 5.4% by weight. S / P = 1.5, and saturated fatty acid was 100%.

<Preparation of roll-in margarine>
Roll-in margarine was prepared according to the formulation shown in Table 1. An oil phase was prepared by blending each hard stock 1 to 13, medium melting point fat and liquid oil. The intermediate melting point oil used in this embodiment and the comparative example was a transesterified oil, “Perkid Y (Fuji Oil Co., Ltd.).” The water phase was water, skimmed milk powder and purified salt, and the emulsifier was stearic acid. A monoglyceride and lecithin were used to prepare roll-in margarine using high melting point hard stocks 1 to 8 in Examples 1 to 8. In Comparative Examples 1 to 5, high melting point hard stocks 9 to 13 were used. A roll-in margarine was prepared and the formulation is shown in Table 1.

<Table 1>

<Production of croissants>
A croissant was baked using the roll-in margarine with the composition shown in Table 2 and the production conditions shown in Table 3.

<Table 2>

<Table 3>

<Evaluation of roll-in margarine and croissant>
Table 4 shows evaluation of margarine for roll-in produced using Examples 1-8 and Comparative Examples 9-13 using hardstock 1-13 and evaluation of croissant produced using margarine for roll-in. The C12 content, C22 content, S / P, and saturated fatty acid content of hard stocks 1 to 13 are shown.

<Table 4>

The workability at the time of manufacture was evaluated whether the margarine had a suitable hardness when taken as a sheet.
Judgment result: 1-4 points
5-7 points Good with moderate hardness
8 to 10 points Appropriate hardness and very good physical properties at the time of roll-in were evaluated as to whether margarine was cracked by spreading with the fabric when the margarine was rolled into the fabric.
Judgment result: 1 to 4 points
5-7 points Good extensibility, good without cracks
8-10 points Very good graining with good spreadability and no cracking. Margarine was stored at 5 ° C and evaluated.
Judgment result: 1-4 points Occurs in one month
5-7 points Occurred in 1-3 months
8 to 10 points No occurrence for 3 months or more The dough float is cut after cutting the croissant in half and the result is 1 to 4 points.
5-7 points Good with lift.
8-10 points Large floating and very good.
The mouth-feel was evaluated for mouth-feel when eating croissants.
Judgment result: 1-4 points
5-7 points
8-10 points Very good mouthfeel

As described above, by using the non-selective transesterified oil according to the present invention, a roll stock margarine hard stock with a reduced trans isomer content can be produced.
In addition, by using the non-selective transesterified oil according to the present invention, it is possible to produce a plastic oil composition having good quality with reduced trans isomer content.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to obtain a transesterified oil and fat, and a plastic oil and fat composition using the same, which have a low trans isomer content and provide good physical properties for use as a hard stock of the plastic oil and fat composition.

Claims (4)

Constituent fatty acids consist essentially of saturated fatty acids, 10 to 30% by weight of saturated fatty acids having 12 carbons (hereinafter referred to as C12), 2 to 10% by weight of saturated fatty acids having 22 or more carbons (hereinafter referred to as C22) A non-selective transesterified oil in which the remainder of the saturated fatty acid is substantially composed of palmitic acid (hereinafter referred to as P) and stearic acid (hereinafter referred to as S), and S / P ≧ 3. 2. The transesterified oil according to claim 1, wherein the saturated fatty acid in the constituent fatty acid is 85% or more. 2. The transesterified oil according to claim 1, which is used for hard stock. A plastic fat composition using the transesterified oil according to claim 1 as a hard stock.