Description
Shelf life improver composition for cooked rice and
method for improving shelf life of cooked rice
Technical field
[0001] The การประดิษฐ์นี้ relates to a liquid shelf life improver composition suitable for application to cooked rice.
Background
[0002] With regard to the preparation of cooked rice for use in making box lunches and rice balls, various types of organic acids, organic acid salts, synthetic
preservatives and/or preservatives derived from
natural products have been examined to explore an
agent suitable for keeping quality of cooked rice.
Among these, brewed vinegar has been mainly employed
for improving the shelf life of cooked rice in terms
of the good preserving effect and safety. It is
required to add a considerably large amount of vinegar
in the cooked rice so as to improve the shelf life
sufficiently. Acetic acid in the vinegar causes
acidic taste and/or smell of the cooked rice. In
particular, box lunches sold in supermarkets and
convenience-stores are often eaten after heating in a
microwave and heating the box lunch further increases
the acidic taste and/or smell of the cooked rice.
Thus improved techniques for keeping quality of cooked
rice have been desired. Another problem is that the
surface of cooked rice gets dry and thus the original texture of is lost in a time-dependent manner.
[0003] Many shelf life improvers and taste improvers
for improving the shelf life of cooked rice less
affecting the texture and taste quality have been
proposed.
[0004] Japanese Patent Publication No. 2004-159629 A offers a shelf life improving formulation for cooked rice ซึ่งประกอบรวมด้วย an organic acid, an organic acid salt and an amino acid. However, the formulation tends to damage the original texture when it contains acetic
acid as an organic acid. In particular, the
formulation confers more acidic taste and smell
immediately after cooking rice and after heating rice
in a microwave. Another problem is that rice tends to
be colored by the addition of an amino acid.
[0005] Japanese Patent Publication No. 2004-208683 A
discloses a taste improver for cooked rice ซึ่งประกอบรวมด้วย
a non-volatile organic acid, a cold-water-soluble high
molecular polysaccharide, reduced syrup, and
optionally dextrin. A high molecular polysaccharide
such as arabic gum and carrageenan has high viscosity
as well as high water-solubility. The high molecular
polysaccharide thus tends to damage the original
texture of cooked rice when added. Further, the
addition of such taste improver as above is likely to cause abnormal taste and/or smell, which appears to be attributable to the high molecular polysaccharide.
[0006] Therefore improving the shelf life of cooked
2
rice without significantly affecting its taste and
texture is still a challenge to be accomplished.
Disclosure of the การประดิษฐ์
[0007] An object of the present การประดิษฐ์ is to
provide an effective shelf life improver composition
for cooked rice that does not or less impair the taste
and texture of the cooked rice.
[0008] The inventors have found that a liquid
formulation ซึ่งประกอบรวมด้วย lactic acid, sodium lactate,
specific reduced syrup and specific organic acid can
improve the shelf life of cooked rice without or less
impairing its taste and quality.
[0009] In particular, the การประดิษฐ์นี้ provides
shelf life improver composition for cooked rice
ซึ่งประกอบรวมด้วย lactic acid; sodium lactate; reduced syrup
ซึ่งประกอบรวมด้วย 17 to 33 wt%- of sugar alcohol with the
polymerization degree of 3, and 13 to 29 wt.W of sugar
alcohol with the polymerization degree of 4 or more;
and one or more organic acids selected from the group
consisting of succinic acid, adipic acid and phytic
acid, โดยที่ the ratio of sodium lactate acid is 40
to 250 parts by weight based on 100 parts by weight of
lactic acid.
[0010] The การประดิษฐ์นี้ further provides a method
for improving the shelf life of cooked rice
characterized by adding such shelf life improver
composition into rice-cooking water or cooked rice.
3
Detailed description of the การประดิษฐ์
[0011] Any lactic acid and sodium lactate products may be employed for manufacturing the shelf life improver composition of the การประดิษฐ์นี้ as long as they
may be added to food. They may be obtained by
synthesis or fermentation.
[0012] The ratio of lactic acid in the shelf life
improver composition of the การประดิษฐ์นี้ may be,
but not limited to, 5 to 35 wt%, preferably 8 to 25
wt% and more preferably 10 to 20 wt% based on the
total weight of the composition.
[0013] The ratio of sodium lactate in the shelf life
improver composition of the การประดิษฐ์นี้ may be
40 to 250 parts by weight, preferably 50 to 200 parts
by weight, and more preferably 60 to 150 parts by
weight based on 100 parts by weight of lactic acid.
When the ratio of sodium lactate is less than 40 parts by weight based on 100 parts by weight of lactic acid, the shelf life improver composition tends to enhance the acidic taste and damage the taste of the cooked rice. When the ratio of sodium lactate is more than 250 parts by weight based on 100 parts by weight of lactic acid, the bacteriostatic effect of the shelf life improver composition tends to be reduced.
[0014] The shelf life improver composition of the
present การประดิษฐ์ ประกอบรวมด้วย specific reduced syrup.
The reduced syrup for use in the shelf life improver
composition of the การประดิษฐ์นี้ may ประกอบรวมด้วย 17
to 33 wt% of sugar alcohol with the polymerization
4
degree of 3, and 13 to 29 wt% of sugar alcohol with
the polymerization degree of 4 or more; preferably 18
to 32 wt% of sugar alcohol with the polymerization
degree of 3, and 14 to 28 wt% of sugar alcohol with
the polymerization degree of 4 or more; and more
preferably 19 to 31 wt% of sugar alcohol with the
polymerization degree of 3, and 15 to 27 wt.% of sugar
alcohol with the polymerization degree of 4 or more.
The ratio of each sugar alcohol herein represents that of the sugar alcohol based on the weight of the solid portion of the reduced syrup.
คำอธิบายองค์ประกอบ improver อายุสำหรับข้าว และ วิธีการปรับปรุงอายุของข้าวเขตข้อมูลทางด้านเทคนิค[0001] การประดิษฐ์นี้เกี่ยวข้องกับอายุการเก็บรักษาของเหลว improver วัตถุผสมเหมาะสำหรับกับข้าวพื้นหลัง[0002] เกี่ยวกับการเตรียมข้าวเพื่อใช้ในการทำอาหารกล่องและลูกข้าว ชนิดต่าง ๆ ของกรดอินทรีย์ กรดอินทรีย์ salts สังเคราะห์สารกันบูดหรือสารกันบูดที่มาธรรมชาติมีการตรวจสอบการสำรวจการตัวแทนที่เหมาะสมกับการรักษาคุณภาพของข้าวในหมู่เหล่านี้ น้ำส้มสายชูกลั่นได้รับส่วนใหญ่เป็นลูกจ้างสำหรับการปรับปรุงอายุของข้าวในแง่สำรองผลดีและปลอดภัย จึงต้องเพิ่มเป็นจำนวนมากมากของน้ำส้มสายชูในข้าวเพื่อเพิ่มอายุการเก็บรักษาพอ กรดอะซิติกในน้ำส้มสายชูสาเหตุรสชาติเปรี้ยวหรือกลิ่นของข้าวสวย ในเฉพาะ อาหารกล่องที่ขายในซูเปอร์มาร์เก็ต และร้านสะดวกซื้อมักจะกินหลังจากเครื่องทำความร้อนในการไมโครเวฟและเครื่องทำความร้อนเพิ่มเติมกล่องอาหารกลางวันรสชาติเปรี้ยวหรือกลิ่นของข้าวสวยดังนั้น เทคนิคการปรับปรุงสำหรับการรักษาคุณภาพของอาหารข้าวได้ถูกต้อง อีกปัญหาคือการ ผิวของข้าวจะแห้ง และจึง มีพื้นผิวเดิมของหายในลักษณะขึ้นอยู่กับเวลา Improvers [0003] อายุมากและรส improversสำหรับการปรับปรุงอายุการเก็บรักษาข้าวน้อยaffecting the texture and taste quality have beenproposed.[0004] Japanese Patent Publication No. 2004-159629 A offers a shelf life improving formulation for cooked rice ซึ่งประกอบรวมด้วย an organic acid, an organic acid salt and an amino acid. However, the formulation tends to damage the original texture when it contains aceticacid as an organic acid. In particular, theformulation confers more acidic taste and smellimmediately after cooking rice and after heating ricein a microwave. Another problem is that rice tends tobe colored by the addition of an amino acid.[0005] Japanese Patent Publication No. 2004-208683 Adiscloses a taste improver for cooked rice ซึ่งประกอบรวมด้วยa non-volatile organic acid, a cold-water-soluble highmolecular polysaccharide, reduced syrup, andoptionally dextrin. A high molecular polysaccharidesuch as arabic gum and carrageenan has high viscosityas well as high water-solubility. The high molecularpolysaccharide thus tends to damage the originaltexture of cooked rice when added. Further, theaddition of such taste improver as above is likely to cause abnormal taste and/or smell, which appears to be attributable to the high molecular polysaccharide.[0006] Therefore improving the shelf life of cooked2 rice without significantly affecting its taste andtexture is still a challenge to be accomplished.Disclosure of the การประดิษฐ์[0007] An object of the present การประดิษฐ์ is toprovide an effective shelf life improver compositionfor cooked rice that does not or less impair the tasteand texture of the cooked rice.[0008] The inventors have found that a liquidformulation ซึ่งประกอบรวมด้วย lactic acid, sodium lactate,specific reduced syrup and specific organic acid canimprove the shelf life of cooked rice without or lessimpairing its taste and quality.[0009] In particular, the การประดิษฐ์นี้ providesshelf life improver composition for cooked riceซึ่งประกอบรวมด้วย lactic acid; sodium lactate; reduced syrupซึ่งประกอบรวมด้วย 17 to 33 wt%- of sugar alcohol with thepolymerization degree of 3, and 13 to 29 wt.W of sugaralcohol with the polymerization degree of 4 or more;and one or more organic acids selected from the groupconsisting of succinic acid, adipic acid and phyticacid, โดยที่ the ratio of sodium lactate acid is 40to 250 parts by weight based on 100 parts by weight oflactic acid.[0010] The การประดิษฐ์นี้ further provides a methodfor improving the shelf life of cooked ricecharacterized by adding such shelf life improvercomposition into rice-cooking water or cooked rice.3 Detailed description of the การประดิษฐ์[0011] Any lactic acid and sodium lactate products may be employed for manufacturing the shelf life improver composition of the การประดิษฐ์นี้ as long as theymay be added to food. They may be obtained bysynthesis or fermentation.[0012] The ratio of lactic acid in the shelf lifeimprover composition of the การประดิษฐ์นี้ may be,but not limited to, 5 to 35 wt%, preferably 8 to 25wt% and more preferably 10 to 20 wt% based on thetotal weight of the composition.[0013] The ratio of sodium lactate in the shelf lifeimprover composition of the การประดิษฐ์นี้ may be40 to 250 parts by weight, preferably 50 to 200 partsby weight, and more preferably 60 to 150 parts byweight based on 100 parts by weight of lactic acid.When the ratio of sodium lactate is less than 40 parts by weight based on 100 parts by weight of lactic acid, the shelf life improver composition tends to enhance the acidic taste and damage the taste of the cooked rice. When the ratio of sodium lactate is more than 250 parts by weight based on 100 parts by weight of lactic acid, the bacteriostatic effect of the shelf life improver composition tends to be reduced.[0014] The shelf life improver composition of thepresent การประดิษฐ์ ประกอบรวมด้วย specific reduced syrup.The reduced syrup for use in the shelf life improver
composition of the การประดิษฐ์นี้ may ประกอบรวมด้วย 17
to 33 wt% of sugar alcohol with the polymerization
4
degree of 3, and 13 to 29 wt% of sugar alcohol with
the polymerization degree of 4 or more; preferably 18
to 32 wt% of sugar alcohol with the polymerization
degree of 3, and 14 to 28 wt% of sugar alcohol with
the polymerization degree of 4 or more; and more
preferably 19 to 31 wt% of sugar alcohol with the
polymerization degree of 3, and 15 to 27 wt.% of sugar
alcohol with the polymerization degree of 4 or more.
The ratio of each sugar alcohol herein represents that of the sugar alcohol based on the weight of the solid portion of the reduced syrup.
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