WO2018016551A1 - アレルゲン検出方法 - Google Patents
アレルゲン検出方法 Download PDFInfo
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Definitions
- the present invention relates to a method for detecting an allergen in a sample.
- Food allergy causes adverse symptoms such as dermatitis, asthma, gastrointestinal dysfunction, and anaphylactic shock due to an immune response caused by food.
- food allergies There are various types of foods that cause food allergies, but shrimp, crab, wheat, buckwheat, egg, milk, and peanuts are particularly prone to allergic symptoms and severe allergic symptoms. .
- Patent Document 1 includes ovalbumin, lysozyme, casein, lactoglobulin, high molecular weight glutenin, low molecular weight glutenin, wheat protein, rye protein, oat protein, barley protein, mustard protein, sesame protein, A peptide having a specific sequence obtained by enzymatic degradation of an allergen selected from the group consisting of macadamia nut protein, pistachio nut protein, Brazil nut protein, walnut protein, peanut protein and hazelnut protein is detected by LC-MS / MS.
- Patent Document 2 discloses an allergen-containing composition in which an allergen-containing extract is formed from a sample composition, and the amount of allergen in the extract is measured using LC-UV / MS or LC-MS. A method for measuring quantities is described.
- the present inventors have found that the presence of the allergen can be detected with high sensitivity by detecting the specific amino acid sequence contained in each allergen.
- the present invention is a method for detecting an allergen in a sample comprising: Treating the sample with a proteolytic enzyme and detecting the presence or absence of an allergen-derived polypeptide in the enzyme-treated sample by analysis utilizing chromatographic separation,
- the allergen is one or more selected from the group consisting of buckwheat, crustacean, milk, egg and peanut, Provide a method.
- the present invention provides a highly sensitive allergen detection method capable of detecting the presence of a trace amount of allergen (especially buckwheat or crustacea) in a sample such as food.
- the present invention provides a method for detecting an allergen in a sample.
- one or more allergens selected from the group consisting of buckwheat, crustacean, milk, egg and peanut can be detected.
- the allergen detected by the method of the present invention is at least one selected from the group consisting of buckwheat and crustaceans, more preferably one selected from the group consisting of buckwheat and crustaceans. More preferably, it is either buckwheat or crustacean.
- the allergen detected by the method of the present invention comprises at least buckwheat, for example, buckwheat alone, buckwheat and crustaceans, or buckwheat, crustaceans, milk, eggs and peanuts.
- examples of the object to be used for allergen detection include, but are not limited to, foods, cosmetics, pharmaceuticals, raw materials thereof, and devices used in the manufacturing process thereof.
- a product obtained by subjecting these objects to normal pretreatment such as pulverization, dissolution, suspension, extraction, or a combination thereof can be used as a sample for the method of the present invention.
- the object is an instrument, a washing liquid, a wiped specimen, or the like, or a product obtained by pulverizing, dissolving, suspending, extracting, or a combination thereof can be used as a sample for the method of the present invention.
- the sample preparation method used in the method of the present invention is not limited to the above, and may include any method that can be used for preparing a sample for the proteolytic enzyme treatment described below.
- the prepared sample is treated with a proteolytic enzyme.
- the proteolytic enzyme used in the method of the present invention include trypsin, chymotrypsin, elastase, and thermolysin, preferably trypsin.
- Treatment conditions may be appropriately selected according to the type of enzyme. For example, in the case of trypsin, an enzyme concentration of 1000 to 20000 U, 25 to 45 ° C., pH of 7 to 9 and 4 to 24 hours are preferable.
- the enzyme treatment degrades the protein molecule of the target allergen to produce a polypeptide derived from the allergen. Therefore, if the target allergen is contained in the sample, the sample after the enzyme treatment contains a polypeptide derived from the target allergen. On the other hand, if the target allergen is not contained in the sample, the sample after the enzyme treatment does not contain a polypeptide derived from the target allergen.
- the presence or absence of the target allergen in the sample can be determined by detecting the presence or absence of the target allergen-derived polypeptide in the sample treated with the proteolytic enzyme.
- the degradation product of buckwheat 22 kDa protein molecule can be detected as an allergen-derived polypeptide.
- a polypeptide comprising an amino acid sequence represented by any one of the following SEQ ID NOs: 1 to 7 is detected as an allergen-derived polypeptide.
- VQVVGDEGR SEQ ID NO: 1 SVFDDNVQR (SEQ ID NO: 2) GQILVVPQGFAVVLK (SEQ ID NO: 3) EGLEWVELK (SEQ ID NO: 4) NFFLAGQSK (SEQ ID NO: 5) GFIVQAR (SEQ ID NO: 6) NDDNAITSPIAGK (SEQ ID NO: 7)
- SEQ ID NO: 1 to 7 the presence or absence of any one or more of the polypeptides comprising the amino acid sequences represented by SEQ ID NOs: 1 to 7 may be detected, but preferably the presence or absence of all of these polypeptides is detected. Is done.
- the degradation product of tropomyosin can be detected as an allergen-derived polypeptide.
- the allergen is a crustacean
- IQLLEEDLER (SEQ ID NO: 8) MDALENQLK (SEQ ID NO: 9) FLAEEADR (SEQ ID NO: 10) IVELEEELR (SEQ ID NO: 11) LAMVEADLER (SEQ ID NO: 12)
- the presence or absence of any one or more of the polypeptides consisting of the amino acid sequences shown in SEQ ID NOs: 8 to 12 may be detected. Preferably, the presence or absence of all of these polypeptides is detected. Is done.
- the allergen-derived polypeptide to be detected is preferably any one or more of the polypeptides consisting of the amino acid sequences represented by SEQ ID NOs: 1 to 7 and represented by SEQ ID NOs: 8 to 12 It is any one or more of polypeptides consisting of amino acid sequences, more preferably all of the polypeptides consisting of amino acid sequences represented by SEQ ID NOs: 1 to 12.
- the degradation product of casein or ⁇ -lactoglobulin can be detected as an allergen-derived polypeptide.
- a polypeptide consisting of the amino acid sequence represented by any one of the following SEQ ID NOs: 13 to 17 is detected as an allergen-derived polypeptide.
- SEQ ID NOs: 13 to 15 are casein-derived polypeptides
- SEQ ID NOs: 16 to 17 are BLG-derived polypeptides.
- FFVAPFPEVFGK (SEQ ID NO: 13) YLGYLEQLLR (SEQ ID NO: 14) NAVPITPTLNR (SEQ ID NO: 15) VLVLDTDYK (SEQ ID NO: 16) TPEVDDEALEK (SEQ ID NO: 17)
- the presence or absence of any one or more of the polypeptides comprising the amino acid sequences shown in SEQ ID NOs: 13 to 17 may be detected, but preferably the presence or absence of all of these polypeptides is detected. Is done.
- the presence or absence of any one or more of the polypeptides consisting of the amino acid sequences shown in SEQ ID NOs: 13 to 15, more preferably the presence or absence of all of these polypeptides is detected, and for BLG, preferably SEQ ID NO: The presence or absence of any one or more of the polypeptides consisting of the amino acid sequences represented by 16 to 17, more preferably the presence or absence of all of these polypeptides is detected.
- the degradation product of ovalbumin can be detected as an allergen-derived polypeptide.
- the allergen when the allergen is an egg, a polypeptide consisting of the amino acid sequence represented by any of the following SEQ ID NOs: 18 to 21 is detected as an allergen-derived polypeptide.
- YPILPEYLQCVK SEQ ID NO: 18
- ELINSWVESQTNGIIR SEQ ID NO: 19
- LTEWTSSNVMEER SEQ ID NO: 20
- HIATNAVLFFGR SEQ ID NO: 21
- the presence or absence of any one or more of the polypeptides comprising the amino acid sequences shown in SEQ ID NOs: 18 to 21 may be detected.
- the presence or absence of all of these polypeptides is detected. Is done.
- the degradation product of Ara h1-3 can be detected as an allergen-derived polypeptide.
- a polypeptide comprising an amino acid sequence represented by any of the following SEQ ID NOs: 22 to 24 is detected as an allergen-derived polypeptide.
- SEQ ID NOs: 22 to 23 are Ara h1-derived polypeptides
- SEQ ID NO: 24 is an Ara h3-derived polypeptide.
- DLAFPGSGEQVEK (SEQ ID NO: 22) VLLEENAGGEQEER (SEQ ID NO: 23) SPDIYNPQAGSLK (SEQ ID NO: 24)
- the presence or absence of any one or more of the polypeptides comprising the amino acid sequences shown in SEQ ID NOs: 22 to 24 may be detected, but preferably the presence or absence of all of these polypeptides is detected. Is done.
- the allergen-derived polypeptide to be detected is preferably any one or more of the polypeptides consisting of the amino acid sequences represented by SEQ ID NOs: 1 to 7, Any one or more of the polypeptides consisting of the amino acid sequences shown in SEQ ID NOs: 8 to 12, any one or more of the polypeptides consisting of the amino acid sequences shown in SEQ ID NOs: 13 to 17, and SEQ ID NOs: 18 to 21 Any one or more of the polypeptides consisting of the amino acid sequences shown, and any one or more of the polypeptides consisting of the amino acid sequences shown in SEQ ID NOs: 22 to 24, more preferably shown by SEQ ID NOs: 1 to 24 All of the polypeptides consisting of amino acid sequences.
- analysis using chromatographic separation includes liquid chromatography-mass spectrometry, such as liquid chromatography tandem mass spectrometry (LC-MS / MS), liquid chromatography time-of-flight mass spectrometry (LC-TOF / MS), etc. Is mentioned.
- MRM Multiple reaction monitoring
- LC-MS / MS is preferred because measurement accuracy (S / N ratio) is high and multiple peptides can be detected at once.
- the chromatography used for the detection of the target allergen-derived polypeptide is preferably liquid chromatography (LC), more preferably reverse phase liquid chromatography (RPLC).
- the LC is high performance liquid chromatography (HPLC), more preferably RP-HPLC.
- the carrier for RPLC include a carrier having a filler in which a hydrocarbon chain (preferably an octadecyl group) is bound to silica gel or a polymer gel substrate, such as a C18 column or a C8 column.
- the LC mobile phase (eluent) is not particularly limited as long as it can separate each target allergen-derived polypeptide individually.
- mass spectrometry In liquid chromatography-mass spectrometry, the LC eluate is subjected to mass spectrometry (MS / MS, TOF / MS, etc.). Mass spectrometry can be performed according to normal conditions used for peptide detection using a known mass spectrometer such as a tandem quadrupole mass spectrometer or a time-of-flight mass spectrometer. For example, multiple reaction monitoring (MRM) using electrospray ionization (ESI) or atmospheric pressure chemical ionization (APCI) is preferred.
- MRM mass spectrometry
- each polypeptide in the eluate is separated according to mass number / charge (m / z). For example, by making a database of m / z values of the target polypeptide in advance, the presence or absence of the target polypeptide in the sample can be detected based on the measured m / z value.
- Reference Example 1 Preparation of an allergen-containing sample 0.5 g of a sample was collected in a 15 mL disposable test tube, and 5 mL of Buffer A (Test Examples 1 to 3) or Buffer B (Test Examples 4 to 5) was added for 3 hours (Test Examples 1 to 3) or 5 hours (Test Examples 4 to 5) were extracted with shaking. The obtained reaction product was centrifuged at 3000 rpm for 5 minutes, and the supernatant was collected.
- Example 1 Analysis of Trypsin Digested Products by LC-MS / MS 1) Trypsin digestion 1 mg of allergen molecule or 0.25 mL of the supernatant prepared in Reference Example 1 was collected in a 1.5 mL polytube and buffer A (test example) 1 to 3) or 0.25 mL of Buffer B (Test Examples 4 to 5) was added and completely dissolved. 40 mg / mL DTT (50 ⁇ L) was added to the resulting solution and incubated at 37 ° C. for 90 minutes, and then 40 mg / mL IA (50 ⁇ L) was added, followed by incubation at 37 ° C. for 30 minutes with light shielding.
- DTT 50 ⁇ L
- IA 50 ⁇ L
- Test Example 1 Detection of buckwheat allergen A target allergen-derived polypeptide was detected by LC-MS / MS MRM using the 22 kDa protein (SEQ ID NO: 25) as a target allergen molecule under the conditions shown in Table 1. The results are shown in FIG.
- Test Example 2 Detection of Crustacean Allergen A target allergen-derived polypeptide was detected by LC-MS / MS MRM using tropomyosin (SEQ ID NO: 26) as a target allergen molecule under the conditions shown in Table 2. The results are shown in FIG.
- Test Example 3 Detection of buckwheat allergen and crustacean allergen from food composition From wheat flour to which 0.01% by weight of buckwheat or crustacean (shrimp powder) was added, an allergen-containing sample was prepared. The obtained sample was subjected to trypsin digestion, desalting and LC-MS / MS MRM according to Example 1 to detect the target allergen-derived polypeptide. As a control, similar analysis was performed using buckwheat or crustacean-free flour. The buckwheat and crustacean allergen-derived polypeptides to be detected and the conditions for LC-MS / MS analysis were the same as in Tables 1 and 2, respectively. The measurement results are shown in FIGS.
- Test Example 4 Detection of Milk, Egg and Peanut Allergen
- An allergen-containing sample was prepared from each of whole milk powder, whole egg powder and peanut powder according to Reference Example 1. Each sample was subjected to trypsin digestion, desalting and LC-MS / MS MRM according to 1) to 3) of Example 1 to detect the target allergen-derived polypeptide.
- the target allergen molecules and the detected allergen-derived polypeptides for each of whole milk powder, whole egg powder and peanut powder are shown in Tables 3-5. Allergens of whole milk powder, whole egg powder and peanut powder could be detected by LC-MS / MS analysis (FIGS. 5 to 7).
- Test Example 5 Detection of milk and peanut allergen from food composition Bread to which either whole milk powder or peanut flour was added (added bread; added amount 0.84% by mass), and bread not containing milk or peanut (no addition) Bread).
- the additive bread and the additive-free bread were mixed to prepare a 100-fold diluted additive bread (addition amount of whole milk powder and peanut powder of 0.0084% by mass).
- the concentration of milk or peanut allergen (peanut soluble protein containing casein and Ara h) contained in the obtained 100-fold diluted pan was measured by ELISA (lower limit of quantification 1 ppm). Table 6 shows the measurement results.
- an allergen-containing sample was prepared from the additive-free bread and 100-fold diluted bread according to Reference Example 1.
- the obtained sample was subjected to trypsin digestion, desalting and LC-MS / MS MRM according to Example 1 to detect the target allergen-derived polypeptide.
- detection targets casein-derived polypeptides (SEQ ID NOs: 13 to 15) were selected for milk, and Ara h1 or h3-derived polypeptides (SEQ ID NOs: 22 to 24) were selected for peanuts.
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Abstract
Description
試料をタンパク質分解酵素で処理すること、および
クロマトグラフィー分離を利用した分析により、該酵素処理した試料中におけるアレルゲン由来ポリペプチドの存在の有無を検出することを含み、
該アレルゲンが、ソバ、甲殻類、乳、卵およびラッカセイからなる群より選択される1種以上である、
方法を提供する。
VQVVGDEGR (配列番号1)
SVFDDNVQR (配列番号2)
GQILVVPQGFAVVLK(配列番号3)
EGLEWVELK (配列番号4)
NFFLAGQSK (配列番号5)
GFIVQAR (配列番号6)
NDDNAITSPIAGK (配列番号7)
本発明の方法においては、上記配列番号1~7で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上の有無が検出されればよいが、好ましくはそれらのポリペプチドの全ての有無が検出される。
IQLLEEDLER(配列番号8)
MDALENQLK (配列番号9)
FLAEEADR (配列番号10)
IVELEEELR (配列番号11)
LAMVEADLER(配列番号12)
本発明の方法においては、上記配列番号8~12で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上の有無が検出されればよいが、好ましくはそれらのポリペプチドの全ての有無が検出される。
FFVAPFPEVFGK(配列番号13)
YLGYLEQLLR (配列番号14)
NAVPITPTLNR (配列番号15)
VLVLDTDYK (配列番号16)
TPEVDDEALEK (配列番号17)
本発明の方法においては、上記配列番号13~17で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上の有無が検出されればよいが、好ましくはそれらのポリペプチドの全ての有無が検出される。カゼインについては、好ましくは配列番号13~15で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上、より好ましくはそれらのポリペプチドの全ての有無が検出され、BLGについては、好ましくは配列番号16~17で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上、より好ましくはそれらのポリペプチドの全ての有無が検出される。
YPILPEYLQCVK (配列番号18)
ELINSWVESQTNGIIR(配列番号19)
LTEWTSSNVMEER (配列番号20)
HIATNAVLFFGR (配列番号21)
本発明の方法においては、上記配列番号18~21で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上の有無が検出されればよいが、好ましくはそれらのポリペプチドの全ての有無が検出される。
DLAFPGSGEQVEK (配列番号22)
VLLEENAGGEQEER(配列番号23)
SPDIYNPQAGSLK (配列番号24)
本発明の方法においては、上記配列番号22~24で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上の有無が検出されればよいが、好ましくはそれらのポリペプチドの全ての有無が検出される。Ara h1については、好ましくは配列番号22~23で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上、より好ましくはそれらのポリペプチドの全ての有無が検出され、Ara h3については、好ましくは配列番号24で示されるアミノ酸配列からなるポリペプチドの有無が検出される。
アセトニトリル(和光純薬工業、特級、HPLC用)
トリプシン(和光純薬工業、ブタ脾臓由来 生化学分析用)
ヨードアセトアミド(IA)(和光純薬工業、生化学分析用)
ジチオスレイトール(DTT)(和光純薬工業、生化学分析用)
尿素(和光純薬工業、特級)
トリフルオロ酢酸(TFA)(純正化学 特級)
(緩衝液)
A:0.1MDTT_0.5MTris-HCl_4M尿素(pH8.2)緩衝液
B:0.5MTris-HCl_2M尿素(pH8.2)緩衝液
検体0.5gを15mLディスポ試験管に採取し、緩衝液A(試験例1~3)または緩衝液B(試験例4~5)を5mL加え、3時間(試験例1~3)または5時間(試験例4~5)振とう抽出した。得られた反応物を3000rpmで5分間遠心分離し、上清を回収した。
1)トリプシン消化
アレルゲン分子1mgまたは参考例1で調製した上清0.25mLを1.5mL用ポリチューブに採取し、緩衝液A(試験例1~3)または緩衝液B(試験例4~5)を0.25mL加えて完全に溶解させた。得られた溶液に40mg/mL DTT50μLを加えて、37℃で90分間インキュベートし、次いで40mg/mL IA50μLを加えて、37℃で30分間、遮光化でインキュベートした。反応液に50mM炭酸水素ナトリウム600μLを加え、次いで10mg/mLトリプシン50mM炭酸水素ナトリウム溶液を100μL加え、37℃で16時間インキュベートした(pH7~9)。反応後、TFA10μLを加えてトリプシンを失活させた。
OASIS HLB(3cc、60mg;Waters)をメタノール1mLおよび水2mLでコンディショニングした。これに1)で得られた反応液の全量を滴下した後、水1mLで洗浄し、次いで60%アセトニトリル1mLにより溶出した。
2)で得られた溶出物を、40℃で窒素乾固後、25%アセトニトリル0.2mLに溶解させた。得られた溶液をフィルターろ過後、下記条件にてLC-MS/MS MRMを行った。
HPLC:Shimadzu NexeraX2
MS/MS:ABSCIEX QTRAP5500
(HPLC条件)
カラム:Kinetik C18 150mm×2.1mm、粒径2.6μm
カラム温度:50℃
カラム流量:0.3mL
溶離液A:0.1%ギ酸;溶離液B:0.1%ギ酸アセトニトリル
グラジエント:A:B 95:5(0min)→40:60(20min)→20:80(50min)→95:5(55min)→95:5(90min)
(質量分析条件)
イオン化法:エレクトロスプレーイオン化法
極性:ポジティブ
スプレー電圧:5500V
ターボヒーター温度:450℃
22kDaタンパク質(配列番号25)を標的アレルゲン分子として、表1に示す条件でLC-MS/MS MRMにより標的アレルゲン由来ポリペプチドを検出した。結果を図1に示す。
トロポミオシン(配列番号26)を標的アレルゲン分子として、表2に示す条件でLC-MS/MS MRMにより標的アレルゲン由来ポリペプチドを検出した。結果を図2に示す。
ソバまたは甲殻類(エビパウダー)を0.01質量%添加した小麦粉から、参考例1に従ってアレルゲン含有試料を調製した。得られた試料を、実施例1に従ってトリプシン消化、脱塩およびLC-MS/MS MRMにかけ、標的アレルゲン由来ポリペプチドを検出した。対照として、ソバまたは甲殻類無添加小麦粉を用いて同様の分析を行った。検出するソバおよび甲殻類のアレルゲン由来ポリペプチド、およびLC-MS/MS分析の条件は、それぞれ表1および表2と同じとした。測定結果を図3および4に示す。
全粉乳、全卵粉およびラッカセイ粉のそれぞれから、参考例1に従ってアレルゲン含有試料を調製した。各試料を、実施例1の1)~3)に従ってトリプシン消化、脱塩およびLC-MS/MS MRMにかけ、標的アレルゲン由来ポリペプチドを検出した。全粉乳、全卵粉およびラッカセイ粉のそれぞれについての標的アレルゲン分子、および検出したアレルゲン由来ポリペプチドを、表3~5に示す。全粉乳、全卵粉およびラッカセイ粉のいずれのアレルゲンも、LC-MS/MS分析で検出することができた(図5~7)。
全粉乳および落花生粉のいずれかを添加したパン(添加パン;添加量0.84質量%)、ならびに乳および落花生を含まないパン(無添加パン)を製造した。添加パンと無添加パンを混合し、100倍希釈添加パン(全粉乳および落花生粉の添加量0.0084質量%)を調製した。得られた100倍希釈添加パンに含まれる乳またはラッカセイアレルゲン(カゼインおよびAra hを含むラッカセイ可溶性タンパク質)の濃度をELISA法にて測定した(定量下限値1ppm)。測定結果を表6に示す。
Claims (13)
- 試料中のアレルゲンを検出する方法であって、
試料をタンパク質分解酵素で処理すること、および
クロマトグラフィー分離を利用した分析により、該酵素処理した試料中におけるアレルゲン由来ポリペプチドの存在の有無を検出することを含み、
該アレルゲンが、ソバ、甲殻類、乳、卵およびラッカセイからなる群より選択される1種以上である、
方法。 - 前記アレルゲンがソバおよび/または甲殻類である、請求項1記載の方法。
- 前記アレルゲンがソバ、甲殻類、乳、卵およびラッカセイである、請求項1記載の方法。
- 前記アレルゲンがソバであり、前記アレルゲン由来ポリペプチドが、配列番号1~7で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上である、請求項1記載の方法。
- 前記アレルゲンが甲殻類であり、前記アレルゲン由来ポリペプチドが、配列番号8~12で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上である、請求項1記載の方法。
- 前記アレルゲン由来ポリペプチドが、配列番号1~7で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上と、配列番号8~12で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上である、請求項2記載の方法。
- 前記アレルゲン由来ポリペプチドが、配列番号1~7で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上と、配列番号8~12で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上と、配列番号13~17で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上と、配列番号18~21で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上と、配列番号22~24で示されるアミノ酸配列からなるポリペプチドのいずれか1種以上である、請求項3記載の方法。
- 配列番号1~7で示されるアミノ酸配列からなるポリペプチドの全てについて存在の有無を検出する、請求項4記載の方法。
- 配列番号8~12で示されるアミノ酸配列からなるポリペプチドの全てについて存在の有無を検出する、請求項5記載の方法。
- 配列番号1~12で示されるアミノ酸配列からなるポリペプチドの全てについて存在の有無を検出する、請求項6記載の方法。
- 配列番号1~24で示されるアミノ酸配列からなるポリペプチドの全てについて存在の有無を検出する、請求項7記載の方法。
- 前記クロマトグラフィー分離を利用した分析が液体クロマトグラフィータンデム質量分析法(LC-MS/MS)である、請求項1~11のいずれか1項記載の方法。
- 前記タンパク質分解酵素がトリプシンである請求項1~12のいずれか1項記載の方法。
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WO2021039147A1 (ja) | 2019-08-30 | 2021-03-04 | 国立医薬品食品衛生研究所長が代表する日本国 | アレルゲン検出用マーカーおよびそれを用いたアレルゲン検出方法 |
JPWO2022044071A1 (ja) * | 2020-08-24 | 2022-03-03 | ||
WO2023190098A1 (ja) * | 2022-03-31 | 2023-10-05 | 日本ハム株式会社 | 落花生アレルゲンの検査用キットおよび検査方法 |
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CA3150323A1 (en) * | 2019-09-12 | 2021-03-18 | Mars, Incorporated | QUANTIFICATION OF PEANUT PROTEIN IN FOOD PRODUCTS |
EP4293351A1 (en) * | 2021-08-27 | 2023-12-20 | ifp Privates Institut für Produktqualität GmbH | Sensitive detection of food allergens by immunoenrichment and lc-ms/ms |
CN114539377A (zh) * | 2022-02-25 | 2022-05-27 | 青岛海关技术中心 | 一种使用液相色谱-质谱检测十足目水产过敏原的方法 |
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WO2012044411A2 (en) | 2010-10-01 | 2012-04-05 | Dow Agrosciences Llc | Quantification and characterization of allergens |
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-
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Non-Patent Citations (11)
Title |
---|
ANSARI, P. ET AL.: "Selection of possible marker peptides for the detection of major ruminant milk proteins in food by liquid chromatography- tandem mass spectrometry", ANALYTICAL BIOANALYTICAL CHEMISTRY, vol. 399, 2011, pages 1105 - 1115, XP019871620 * |
CHASSAIGNE, H. ET AL.: "Proteomics-Based Approach To Detect and Identify Major Allergens in Processed Peanuts by Capillary LC-Q-TOF (MS/MS", JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, vol. 55, no. 11, 2007, pages 4461 - 4473, XP055371918 * |
KORTE, R. ET AL.: "New High-Performance Liquid Chromatography Coupled Mass Spectrometry Method for the Detection of Lobster and Shrimp Allergens in Food Samples via Multiple Reaction Monitoring and Multiple Reaction Monitoring Cubed", JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, vol. 64, 8 July 2016 (2016-07-08), pages 6219 - 6227, XP055454285 * |
LOCK, S. ET AL.: "The Detection of Allergens in Bread and Pasta by Liquid Chromatography Tandem Mass Spectrometry", FOOD & ENVIRONMENTAL, 2010, pages 1 - 5, XP055455101, Retrieved from the Internet <URL:https://sciex.com/Documents/brochures/Allergens-QTRAP4k_1830610.pdf> * |
NAGAI, H. ET AL.: "Development of a Method for Crustacean Allergens Using Liquid Chromatography/Tandem Mass Spectrometry", JOURNAL OF AOAC INTERNATIONAL, vol. 98, no. 5, 2015, Arlington, VA , pages 1355 - 1365, XP009514171, ISSN: 1060-3271, DOI: 10.5740/jaoacint.14-248 * |
NAGAI, H.: "Development of a Method for Determination of Buckwheat Allergens Using Liquid Chromatography with Tandem Mass Spectrometry", JOURNAL OF AOAC INTERNATIONAL, vol. 100, no. 4, 3 March 2017 (2017-03-03), Arlington, VA, pages 1051 - 057, XP009514172, ISSN: 1060-3271, DOI: 10.5740/jaoacint.11-0214 * |
NAGAI, HIROYUKI: "Development of allergic substance test method using LC-MS / MS", REPORT OF GIFU PREFECTURAL RESEARCH INSTITUTE FOR HEALTH AND ENVIRONMENTAL SCIENCES, vol. 22, 2014, pages 1 - 5, XP009518417 * |
RAHMAN, A.M.A. ET AL.: "Analysis of the allergic proteins in black tiger prawn (Penaeus monodon) and characterization of the major allergen tropomyosin using mass spectrometry", RAPID COMMUNICATIONS IN MASS SPECTROMETRY, vol. 24, 2010, pages 2462 - 2470, XP055455120 * |
See also references of EP3489677A4 * |
TAKAOKA, M. ET AL.: "Changes in Proteome Patterns in Buckwheat Seed under Submergence", PROCEEDING OF THE 9TH INTERNATIONAL SYMPOSIUM ON BUCKWHEAT, 2004, pages 95 - 98, XP055455109 * |
YANO, M. ET AL.: "Purification and Properties of Allergenic Proteins in Buckwheat Seeds", AGRICULTURAL BIOLOGICAL CHEMISTRY, vol. 53, no. 9, September 1989 (1989-09-01), pages 2387 - 2392, XP055455103 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021039147A1 (ja) | 2019-08-30 | 2021-03-04 | 国立医薬品食品衛生研究所長が代表する日本国 | アレルゲン検出用マーカーおよびそれを用いたアレルゲン検出方法 |
KR20220052959A (ko) | 2019-08-30 | 2022-04-28 | 국립의약품식품위생연구소장이 대표하는 일본국 | 알레르겐 검출용 마커 및 이를 사용한 알레르겐 검출 방법 |
JPWO2022044071A1 (ja) * | 2020-08-24 | 2022-03-03 | ||
WO2022044071A1 (ja) * | 2020-08-24 | 2022-03-03 | 株式会社島津製作所 | 質量分析制御装置、質量分析装置、質量分析方法およびプログラム |
JP7405266B2 (ja) | 2020-08-24 | 2023-12-26 | 株式会社島津製作所 | 質量分析制御装置、質量分析装置、質量分析方法およびプログラム |
WO2023190098A1 (ja) * | 2022-03-31 | 2023-10-05 | 日本ハム株式会社 | 落花生アレルゲンの検査用キットおよび検査方法 |
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CA3031176C (en) | 2024-02-13 |
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EP3489677B1 (en) | 2023-01-18 |
JP6903661B2 (ja) | 2021-07-14 |
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