JP6714000B2 - ω−6系多価不飽和脂肪酸を含む組成物の安定性を向上させる方法 - Google Patents
ω−6系多価不飽和脂肪酸を含む組成物の安定性を向上させる方法 Download PDFInfo
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- JP6714000B2 JP6714000B2 JP2017533761A JP2017533761A JP6714000B2 JP 6714000 B2 JP6714000 B2 JP 6714000B2 JP 2017533761 A JP2017533761 A JP 2017533761A JP 2017533761 A JP2017533761 A JP 2017533761A JP 6714000 B2 JP6714000 B2 JP 6714000B2
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Classifications
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Description
・酸化防止剤の添加、
・マイクロカプセル化、
・MA包装。
(i)少なくとも1つのω−6系多価不飽和脂肪酸成分を含む出発組成物を調製する工程と、
(ii)リジン組成物を調製する工程と、
(iii)出発組成物およびリジン組成物の水溶液、水−アルコール溶液、またはアルコール溶液を混合し、次に、結果として生じた混合物を噴霧乾燥条件下に置いて、リジン由来の陽イオンとω−6系多価不飽和脂肪酸由来の陰イオンからなる少なくとも1つの塩を含む固体生成物組成物を生成する工程と、を有し、その生成物組成物は、SC<5wt%、SC<3wt%、SC<1wt%、およびSC<0.5wt%から選択される溶剤含有量SCを呈する方法により、ω−6系多価不飽和脂肪酸を含む組成物を酸化に対して安定させることができることが分かっている。
エイコサトリエン酸(ETE)20:3(n−3)(all−cis−11,14,17−エイコサトリエン酸)、エイコサテトラエン酸(ETA)20:4(n−3)(all−cis−8,11,14,17−エイコサテトラエン酸)、ヘネイコサペンタエン酸(HPA)21:5(n−3)(all−cis−6,9,12,15,18−ヘネイコサペンタエン酸)、ドコサペンタエン酸(イワシ酸)(DPA)22:5(n−3)(all−cis−7,10,13,16,19−ドコサペンタエン酸)、テトラコサペンタエン酸24:5(n−3)(all−cis−9,12,15,18,21−テトラコサペンタエン酸)、テトラコサヘキサエン酸(ニシン酸)24:6(n−3)(all−cis−6,9,12,15,18,21−テトラコサヘキサエン酸)。
エイコサジエン酸20:2(n−6)(all−cis−11,14−エイコサジエン酸)、ジホモ−γ−リノレン酸(DGLA)20:3(n−6)(all−cis−8,11,14−エイコサトリエン酸)、ドコサジエン酸22:2(n−6)(all−cis−13,16−ドコサジエン酸)、アドレン酸22:4(n−6)(all−cis−7,10,13,16−ドコサテトラエン酸)、ドコサペンタエン酸(オズボンド酸)22:5(n−6)(all−cis−4,7,10,13,16−ドコサペンタエン酸)、テトラコサテトラエン酸24:4(n−6)(all−cis−9,12,15,18−テトラコサテトラエン酸)、テトラコサペンタエン酸24:5(n−6)(all−cis−6,9,12,15,18−テトラコサペンタエン酸)。
試薬および溶液:
1.酢酸−クロロホルム溶液(7.2mlの酢酸と4.8mlのクロロホルム)。
2.飽和ヨウ化カリウム溶液。暗所に保管すること。
3.チオ硫酸ナトリウム溶液、0.1N。市販されている。
4.1%デンプン溶液。市販されている。
5.蒸留水または脱イオン水。
試薬の空試験を実施する。
1.100mlのガラス栓付きエルレンマイヤーフラスコに、2.00(±0.02)gの試料を入れて秤量する。重量を0.01g単位で記録する。
2.メスシリンダーを用いて、12mlの酢酸−クロロホルム溶液を添加する。
3.試料が完全に溶解するまで、フラスコ内をかき混ぜる(ホットプレート上で注意深く温めることが必要な可能性もある)。
4.1mlのモールピペットを用いて、0.2mlの飽和ヨウ化カリウム溶液を添加する。
5.フラスコに栓をし、正確に1分間、フラスコの内容物をかき混ぜる。
6.その直後に、メスシリンダーを用いて12mlの蒸留水または脱イオン水を添加し、栓をして勢いよく振り混ぜて、ヨウ素をクロロホルム層から遊離させる。
7.ビュレットに0.1Nチオ硫酸ナトリウムを充填する。
8.溶液の最初の色が深い赤みがかったオレンジ色である場合、明るい色になるまで混ぜながらゆっくりと滴定する。溶液が最初から明るい琥珀色である場合は、工程9に進む。
9.分注装置を用いて、指示薬として1mlのデンプン溶液を添加する。
10.水溶液(上層)において青みがかった灰色が消えるまで滴定する。
11.使用された滴定剤の滴定量(mls)を小数第2位まで正確に記録する。
計算:
S=試料の滴定
B=空試験の滴定
過酸化物価=(S−B)×Nチオ硫酸塩×1000/試料の重量
アニシジン価は、光学濃度の100倍と定義され、光学濃度は、溶剤と試薬との混合物100ml中の1gの被検物を含有する溶液を含む1cmセルにおいて下記の方法に従って測定される。できるだけ迅速に作業を実施し、活性光線被曝を回避する。
AV=(25×(1.2×A1−A2))/m
A1=350nmでの試験液(b)の吸光度
A2=350nmでの試験液(a)の吸光度
m=試験液(a)中の被検物の質量(グラム)
・0.90<R<1.10、x(fe)=5;PC=15;SC<1wt%
・0.90<R<1.10、x(fe)=3;PC=15;SC<1wt%
・0.90<R<1.10、x(fe)=2;PC=15;SC<1wt%
・0.90<R<1.10、x(fe)=1;PC=15;SC<1wt%
・0.95<R<1.05、x(fe)=5;PC=15;SC<1wt%
・0.95<R<1.05、x(fe)=3;PC=15;SC<1wt%
・0.95<R<1.05、x(fe)=2;PC=15;SC<1wt%
・0.95<R<1.05、x(fe)=1;PC=15;SC<1wt%
・0.98<R<1.02、x(fe)=5;PC=15;SC<1wt%
・0.98<R<1.02、x(fe)=3;PC=15;SC<1wt%
・0.98<R<1.02、x(fe)=2;PC=15;SC<1wt%
・0.98<R<1.02、x(fe)=1;PC=15;SC<1wt%
・0.90<R<1.10、x(fe)=5;PC=30;SC<1wt%
・0.90<R<1.10、x(fe)=3;PC=30;SC<1wt%
・0.90<R<1.10、x(fe)=2;PC=30;SC<1wt%
・0.90<R<1.10、x(fe)=1;PC=30;SC<1wt%
・0.95<R<1.05、x(fe)=5;PC=30;SC<1wt%
・0.95<R<1.05、x(fe)=3;PC=30;SC<1wt%
・0.95<R<1.05、x(fe)=2;PC=30;SC<1wt%
・0.95<R<1.05、x(fe)=1;PC=30;SC<1wt%
・0.98<R<1.02、x(fe)=5;PC=30;SC<1wt%
・0.98<R<1.02、x(fe)=3;PC=30;SC<1wt%
・0.98<R<1.02、x(fe)=2;PC=30;SC<1wt%
・0.98<R<1.02、x(fe)=1;PC=30;SC<1wt%
・0.90<R<1.10、x(fe)=5;PC=50;SC<1wt%
・0.90<R<1.10、x(fe)=3;PC=50;SC<1wt%
・0.90<R<1.10、x(fe)=2;PC=50;SC<1wt%
・0.90<R<1.10、x(fe)=1;PC=50;SC<1wt%
・0.95<R<1.05、x(fe)=5;PC=50;SC<1wt%
・0.95<R<1.05、x(fe)=3;PC=50;SC<1wt%
・0.95<R<1.05、x(fe)=2;PC=50;SC<1wt%
・0.95<R<1.05、x(fe)=1;PC=50;SC<1wt%
・0.98<R<1.02、x(fe)=5;PC=50;SC<1wt%
・0.98<R<1.02、x(fe)=3;PC=50;SC<1wt%
・0.98<R<1.02、x(fe)=2;PC=50;SC<1wt%
・0.98<R<1.02、x(fe)=1;PC=50;SC<1wt%
・0.90<R<1.10、x(fe)=5;PC=75;SC<1wt%
・0.90<R<1.10、x(fe)=3;PC=75;SC<1wt%
・0.90<R<1.10、x(fe)=2;PC=75;SC<1wt%
・0.90<R<1.10、x(fe)=1;PC=75;SC<1wt%
・0.95<R<1.05、x(fe)=5;PC=75;SC<1wt%
・0.95<R<1.05、x(fe)=3;PC=75;SC<1wt%
・0.95<R<1.05、x(fe)=2;PC=75;SC<1wt%
・0.95<R<1.05、x(fe)=1;PC=75;SC<1wt%
・0.98<R<1.02、x(fe)=5;PC=75;SC<1wt%
・0.98<R<1.02、x(fe)=3;PC=75;SC<1wt%
・0.98<R<1.02、x(fe)=2;PC=75;SC<1wt%
・0.98<R<1.02、x(fe)=1;PC=75;SC<1wt%
本明細書に記載されるように工程(iii)において噴霧乾燥を利用する本発明の方法によって得られる好ましい組成物は、以下の選択肢のうちの1つにより特徴づけられる。
・0.90<R<1.10、x(fe)=1、SC<3wt%、sp=90
・0.90<R<1.10、x(fe)=1、SC<3wt%、sp=95
・0.90<R<1.10、x(fe)=3、SC<3wt%、sp=90
・0.90<R<1.10、x(fe)=3、SC<3wt%、sp=95
・0.95<R<1.05、x(fe)=1、SC<3wt%、sp=90
・0.95<R<1.05、x(fe)=1、SC<3wt%、sp=95
・0.95<R<1.05、x(fe)=3、SC<3wt%、sp=90
・0.95<R<1.05、x(fe)=3、SC<3wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<3wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<3wt%、sp=97
・0.98<R<1.02、x(fe)=3、SC<3wt%、sp=95
・0.98<R<1.02、x(fe)=3、SC<3wt%、sp=97
・0.90<R<1.10、x(fe)=1、SC<1wt%、sp=90
・0.90<R<1.10、x(fe)=1、SC<1wt%、sp=95
・0.90<R<1.10、x(fe)=3、SC<1wt%、sp=90
・0.90<R<1.10、x(fe)=3、SC<1wt%、sp=95
・0.95<R<1.05、x(fe)=1、SC<1wt%、sp=90
・0.95<R<1.05、x(fe)=1、SC<1wt%、sp=95
・0.95<R<1.05、x(fe)=3、SC<1wt%、sp=90
・0.95<R<1.05、x(fe)=3、SC<1wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<1wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<1wt%、sp=97
・0.98<R<1.02、x(fe)=3、SC<1wt%、sp=95
・0.98<R<1.02、x(fe)=3、SC<1wt%、sp=97
・0.90<R<1.10、x(fe)=1、SC<0.5wt%、sp=90
・0.90<R<1.10、x(fe)=1、SC<0.5wt%、sp=95
・0.90<R<1.10、x(fe)=3、SC<0.5wt%、sp=90
・0.90<R<1.10、x(fe)=3、SC<0.5wt%、sp=95
・0.95<R<1.05、x(fe)=1、SC<0.5wt%、sp=90
・0.95<R<1.05、x(fe)=1、SC<0.5wt%、sp=95
・0.95<R<1.05、x(fe)=3、SC<0.5wt%、sp=90
・0.95<R<1.05、x(fe)=3、SC<0.5wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<0.5wt%、sp=95
・0.98<R<1.02、x(fe)=1、SC<0.5wt%、sp=97
・0.98<R<1.02、x(fe)=3、SC<0.5wt%、sp=95
・0.98<R<1.02、x(fe)=3、SC<0.5wt%、sp=97
実験例
分析方法:
44.8%のARA含有量、8.1A/gのアニシジン価、および4.0mmol/kgの過酸化物価を有するアラキドン酸グリセリンエステル(市販品、標準品質)500gを、(窒素で不活性化された)3Lフラスコに投入し、500mlのエタノールで希釈した。175gのNaOH(50%)溶液と250mlの水を添加し、得られた溶液を30℃〜50℃で30分間撹拌した。次いで、反応混合物を1250mlの水で希釈し、175mlの硫酸(50wt%)を添加した。引き続き10分間攪拌した後、相分離し、生成物相を毎回125mlの水で3回洗浄し、次いで125mlの硫酸ナトリウム水溶液(10wt%)で洗浄した。475gのアラキドン酸を、4.2A/gのアニシジン価および7.2mmol/kgの過酸化物値を有する油として得た。オリゴマー含有量は測定されなかった。
99.2%のGC純度、19.1A/gのアニシジン価、および52.1mmol/kgの過酸化物価を有するγ−リノレン酸エチルエステル(市販品、標準品質)500gを、(窒素で不活性化された)3Lフラスコに投入し、500mlのエタノールで希釈した。170gのNaOH(50%)溶液と250mlの水を添加し、得られた溶液を30℃〜50℃で30分間撹拌した。次いで、反応混合物を1250mlの水で希釈し、175mlの硫酸(50wt%)を添加した。引き続き10分間攪拌した後、相分離し、生成物相を毎回125mlの水で3回洗浄し、次いで125mlの硫酸ナトリウム水溶液(10wt%)で洗浄した。500gのγ−リノレン酸を、7.6A/gのアニシジン価および5.6mmol/kgの過酸化物価を有する油として得た。オリゴマー含有量は、0.3面積%(ゲルクロマトグラフィー、RI検出器)と測定された。
実験例1から得られ、滴定において187mgKOH/gの酸価を示すアラキドン酸70.0gを、70.0gのエタノールに溶解し、34.2gのL−リジン水溶液(51.3%)と化合させた。40〜50℃に加熱した後に得られた均質な溶液を、入口温度が140℃、出口温度が80℃であるラボ用噴霧乾燥機Buchi B190で噴霧乾燥した。含水量が0.62%であり、エタノール含有量が<0.1%であるベージュ色粉末81.2gを得た。得られた塩は、1A/gのアニシジン価および1mmol/kg未満の過酸化物価を示した。オリゴマー含有量は、1.1面積%(ゲルクロマトグラフィー、RI−検出器)と測定された。
実験例2から得られ、滴定において137.6mgKOH/gの酸価を示すγ−リノレン酸70.0gを、70.0gのエタノールに溶解させ、25.1gのL−リジン水溶液(51.3%)と化合させた。40〜50℃に加熱した後に得られた均質な溶液を、入口温度が140℃、出口温度が80℃であるラボ用噴霧乾燥機Buchi B190で噴霧乾燥した。含水量が1.13%であり、エタノール含有量が<0.1%であるベージュ色粉末47.9gを得た。得られた塩は、5.4A/gのアニシジン値および1.0mmol/kgの過酸化物価を示した。オリゴマー含有量は、0.6面積%(ゲルクロマトグラフィー、RI−検出器)と測定された。
実験1および2においてそれぞれ使用した液体エチルアラキドン酸グリセリンエステルおよびγ−リノレン酸エチルエステル、ならびに、実験1および2において得られたアラキドン酸およびγ−リノレン酸のそれぞれ30gを、500mlのショット製デュラン瓶に充填した。
実験3および4において得られた固体リジン−塩ARA−LysおよびGLA−Lysのそれぞれ約30gをショット製デュラン瓶に充填した。
これらの瓶を全て一緒に、50℃で、換気バルブを開いた乾燥オーブンに、蓋が開いた状態で入れ、暗所で81日間保管した。続いて実施した分析の結果を以下の表(表1)に要約する。
これらの瓶を全て一緒に、50℃で、換気バルブを開いた乾燥オーブンに、蓋が開いた状態で入れ、26日間保管した。続いて実施した分析の結果を以下の表(表1)にまとめた。
Claims (8)
- アラキドン酸およびγ−リノレン酸から選ばれる少なくとも1つのω−6系多価不飽和脂肪酸を含む組成物の酸化安定性を向上させる方法であって、前記方法は、
(i)アラキドン酸およびγ−リノレン酸から選ばれる少なくとも1つのω−6系多価不飽和脂肪酸成分のエタノール溶解液を含む出発組成物を調製する工程と、
(ii)L−リジン水溶液を調製する工程と、
(iii)出発組成物およびL−リジン水溶液を混合し、続いて、結果として生じた混合物を加熱し、噴霧乾燥して、L−リジン由来の陽イオンとω−6系多価不飽和脂肪酸由来の陰イオンとからなる少なくとも1つの塩を含む固体生成物組成物を生成する工程と、を有し、前記生成物組成物は、SC<5wt%、SC<3wt%、SC<1wt%、およびSC<0.5wt%から選択される溶剤含有量SCを呈する方法。 - 工程(i)で調製する前記出発組成物のカルボン酸官能基量n(ca)と工程(ii)で調製する前記L−リジン水溶液のリジン量n(lys)との比R=n(ca)/n(lys)が、0.9<R<1.1、0.95<R<1.05、および、0.98<R<1.02から選択される範囲にあるようにして、工程(ii)におけるL−リジン水溶液を調製することを特徴とする、請求項1に記載の方法。
- 工程(i)で調製する前記出発組成物は、x(fe)wt%以下の脂肪酸エステルを含み、x(fe)は、5、3、1、0.3、および0から選択されることを特徴とする、請求項1〜2のいずれか一項に記載の方法。
- 前記生成物組成物の少なくともspwt%が、L−リジン由来の陽イオンと、アラキドン酸およびγ−リノレン酸から選ばれる1つ以上のω−6系多価不飽和脂肪酸ならびに他の天然脂肪酸由来の陰イオンとからなる1つ以上の塩からなり、spは、90、95、97、98、99、および100から選択されるようにして、工程(i)における出発組成物と工程(ii)におけるL−リジン水溶液とを調製することを特徴とする、請求項1〜3のいずれか一項に記載の方法。
- 請求項1〜4のいずれか一項に記載の方法によって得ることができる組成物。
- アラキドン酸およびγ−リノレン酸から選ばれる1つ以上のω−6系多価不飽和脂肪酸を含む食品を製造するための、請求項5に記載の組成物の使用。
- アラキドン酸およびγ−リノレン酸から選ばれる1つ以上のω−6系多価不飽和脂肪酸を含む栄養製品を製造するための、請求項5に記載の組成物の使用。
- アラキドン酸およびγ−リノレン酸から選ばれる1つ以上のω−6系多価不飽和脂肪酸を含む医薬品を製造するための、請求項5に記載の組成物の使用。
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