JP2022552843A - 低温抽出コーヒー液およびその製造方法 - Google Patents
低温抽出コーヒー液およびその製造方法 Download PDFInfo
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- A—HUMAN NECESSITIES
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- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/28—Drying or concentrating coffee extract
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/28—Drying or concentrating coffee extract
- A23F5/30—Drying or concentrating coffee extract by freezing out the water
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
- A23F5/28—Drying or concentrating coffee extract
- A23F5/34—Drying or concentrating coffee extract by spraying into a gas stream
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/46—Coffee flavour; Coffee oil; Flavouring of coffee or coffee extract
- A23F5/48—Isolation or recuperation of coffee flavour or coffee oil
- A23F5/483—Isolation or recuperation of coffee flavour or coffee oil by solvent extraction of the beans, ground or not
Abstract
Description
第1の実施形態では、本発明は一般に、低温抽出コーヒー液を製造するための方法であって、(1)コーヒー豆に水を加えて懸濁液を形成する工程と、(2)前記懸濁液を、複数の工程で100μm以下の平均粒径まで湿式粉砕する工程と、(3)前記懸濁液を、1つまたは複数の分離工程に供する工程であって、懸濁液が少なくとも1つの液相および固相に分離され、前記液相がコーヒーアロマを含み、前記油相が主成分としてコーヒー油を含み、前記固相が主成分としてコーヒー粉末および水を含む、工程と、(4)少なくともコーヒーアロマを含む液相をさらに処理して低温抽出コーヒー液を生成する工程と、を含み、工程(1)から(3)の間の懸濁液の温度が47℃を超えない、方法に関する。この方法では、1時間未満の非常に短い抽出時間の後でも驚くほど高い香味収率の低温抽出抽出液が得られることが判明している。したがって、従来の方法と比較して、起源のアロマおよび栄養的に価値のある成分の収率がより高い低温抽出コーヒー液が、非常に短い時間で得ることができる。その上、低温抽出プロセスは、継続的に行なうことができ、製造設備に必要な空間が最小限であり、これは量産化に特に有利であり、既知のバッチプロセスと比較すると最終的に製造コストを削減する。最後ではあるが大事なことに、連続運転は、プロセス制御を容易にし、したがって製品品質のばらつきを減らすのに役立つ。
第2の実施形態では、本発明は、上記で概説した第1の実施形態に基づく方法によって得られた低温抽出コーヒー液に関する。好ましい実施形態では、低温抽出コーヒー液は、第1の実施形態に基づく方法によって得られたコーヒーアロマであり、好ましくは液相(複数可)の処理によって得られたコーヒーアロマと固相の処理から回収されたコーヒーアロマ画分の組合せを含み得る(例えば図1参照)。
液状低温抽出コーヒー液は、本発明の方法に基づいて、焙煎したコーヒー豆(原産:Sidamo)を、脱塩および滅菌ろ過水と混合し、水性懸濁液を穴あきディスクミル(FrymaKoruma ML 150)中で粗粉砕し、粗スラリーを歯付きコロイドミル(FrymaKoruma MZ 130)で100μm以下の平均粒径まで微粉砕することによって調製した。その後、微粉砕された懸濁液を、3相デカンタ遠心分離機(Flottweg SEによって製造されたTricanter(登録商標))を用いた3相分離に供した。このように得られた水相は、遠心分離機(GEA Westfalia)を使用して脂肪およびコロイド状の固体を除去することによって清澄化した。最後に、清澄化した抽出液を、市販されているKoch Supercor PVDF膜(12mm直径、35m2面積、および0.2μm孔径)を使用してクロスフローろ過によってろ過した。プロセス中、懸濁液/水相の温度は、室温を超えなかった。全抽出時間は、およそ10分であった。
比較例1では、実施例1と同様のコーヒー豆を微粉砕し、続いて実施例1と同じ重量比のコーヒー豆対水を使用して、20℃で8時間脱塩および滅菌ろ過水を用いた従来の低温抽出およびその後のろ過に供した。
比較例2は、実施例1と同じ重量比のコーヒー豆対水を使用して、抽出が温水(95℃)で4分間行なわれたことを除いて比較例1と同様に調製した。
抽出液の調製の直後に、実施例1と比較例1および2の試料は、それぞれ独立に希釈し(50g/L)、それらの選択した20種の主要なコーヒーアロマの含有量についてGC-MSによって定量的に分析した。測定結果を臭気閾値と一緒に以下の表1に示す。
Claims (15)
- 低温抽出コーヒー液を製造するための方法であって、
(1)コーヒー豆に水を加えて懸濁液を形成する工程と、
(2)前記懸濁液を、複数の工程で100μm以下の平均粒径まで湿式粉砕する工程と、
(3)前記懸濁液を、1つまたは複数の分離工程に供する工程であって、懸濁液が少なくとも1つの液相および固相に分離され、前記液相がコーヒーアロマを含み、前記固相が主成分としてコーヒー粉末および水を含む、工程と、
(4)少なくとも水相をさらに処理して低温抽出コーヒー液を生成する工程と、
を含み、工程(1)から(3)の間の懸濁液の温度が47℃を超えない、方法。 - 工程(1)から(3)の間の懸濁液の温度が、0℃~40℃、好ましくは2℃~35℃、さらに好ましくは3℃~30℃の範囲である、請求項1に記載の方法。
- 工程(4)の間の水相の温度が、47℃を超えず、好ましくは0℃~40℃、好ましくは2℃~35℃、さらに好ましくは3℃~30℃の範囲である、請求項1または2に記載の方法。
- 工程(2)が、
(a)1つまたは複数の、500μm以下の平均粒径までの粗粉砕工程と、
(b)後続の、100μm以下、好ましくは80μm以下の平均粒径までの微粉砕工程
を含む、請求項1から3のいずれかに記載の方法。 - 工程(3)が、好ましくは単一の分離段階で、デカンタの使用によって、懸濁液を、コーヒーアロマを含む水相、主成分としてコーヒー油を含む油相、ならびに主成分としてコーヒー粉末および水を含む固相に分離する工程を含む、請求項1から4のいずれかに記載の方法。
- 工程(3)が、水を固相から分離し、それを工程(4)の前に水相に再導入する工程をさらに含む、請求項5に記載の方法。
- 工程(1)から(4)が、連続的に行なわれる、請求項1から6のいずれかに記載の方法。
- 工程(1)から(3)が、10時間未満、好ましくは6時間未満、より好ましくは3時間未満、さらに好ましくは1時間未満、特に好ましくは30分未満の期間内に行なわれる、請求項1から7のいずれかに記載の方法。
- 工程(1)から(4)が、12時間未満、好ましくは8時間未満、より好ましくは4時間未満、さらに好ましくは1時間未満、特に好ましくは40分未満の期間内に行なわれる、請求項1から8のいずれかに記載の方法。
- 工程(4)が、工程(3)で得られた水相を1つまたは複数の固体/液体分離工程に供することを含む、請求項5に記載の方法。
- 1つまたは複数の固体/液体分離工程が、遠心分離工程および/またはろ過工程を含む、請求項10に記載の方法。
- ろ過工程が、絶対孔径0.45μm以下、好ましくは0.22μm以下のろ過膜を使用することによって行なわれる、請求項11に記載の方法。
- ろ過工程がクロスフローろ過を含む、請求項11または12のいずれかに記載の方法。
- 請求項1から13のいずれかに記載の方法によって得られる低温抽出コーヒー液。
- 請求項14に記載の低温抽出コーヒー液を濃縮工程に供し、続いて濃縮した抽出液を噴霧乾燥または凍結乾燥させてインスタント低温抽出コーヒー粉末を得ることによって得られるインスタント低温抽出コーヒー粉末。
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EP19204121.8A EP3808185B1 (en) | 2019-10-18 | 2019-10-18 | Method for producing cold brew coffee |
EP19204121.8 | 2019-10-18 | ||
PCT/EP2020/079213 WO2021074378A1 (en) | 2019-10-18 | 2020-10-16 | Cold-brew coffee extracts and methods of producing the same |
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US8720321B2 (en) | 2005-04-18 | 2014-05-13 | Bean Logik Llc | Apparatus for extracting cold-brewed coffee concentrate |
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WO2014116976A1 (en) | 2013-01-24 | 2014-07-31 | Bkon Llc | Vacuum brewed beverage machine and vacuum brewing method |
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