JPWO2009104670A1 - 抗菌抗ウイルス剤及びその使用方法 - Google Patents
抗菌抗ウイルス剤及びその使用方法 Download PDFInfo
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- JPWO2009104670A1 JPWO2009104670A1 JP2009554364A JP2009554364A JPWO2009104670A1 JP WO2009104670 A1 JPWO2009104670 A1 JP WO2009104670A1 JP 2009554364 A JP2009554364 A JP 2009554364A JP 2009554364 A JP2009554364 A JP 2009554364A JP WO2009104670 A1 JPWO2009104670 A1 JP WO2009104670A1
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Abstract
Description
青森県産のホタテガイの貝殻を、粒径5mm程度に乾式ボールミルを用いて予備粉砕してから、空気中で1050℃〜1100℃で3時間焼成した。この焼成物の一部を120メッシュの篩によって篩別した。極めて脆いため篩別中に解砕され、篩上に残存する貝殻の焼成物は殆どなかった。篩下の粒子の体積粒径分布を測定したところ、98%体積粒径は30μm、90%体積粒径は12μm、体積平均粒径は8μmであった。分級操作は特に行わなくても、90%体積粒径は30μm以下となっていた。なお、体積粒径分布等は、マイクロトラック粒度分布測定装置(日機装社製)を用いて、使用説明書に従って測定した。
製造例1において、回転数、途中の水の追加量を調整し、10時間粉砕処理した以外は、製造例1と同様にして、超微粒子Bの懸濁液を得た。
製造例1と同様に焼成及び篩別した粒子を、乾式ビーズミル粉砕機(アシザワ・ファインテック社製)で約2時間処理し、「微粒子a」を得た。この「微粒子a」の体積粒径分布を図5、個数粒径分布を図6に示す。「微粒子a」の10%(体積)粒径は8.5μm、50%(体積)粒径は18.4μm、90%(体積)粒径は43.7μm、体積平均粒径は18.4μmであり、10%(個数)粒径は3.3μm、50%(個数)粒径は6.1μm、90%(個数)粒径は13.2μm、個数平均粒径は6.1μmであった。
製造例1と同様に焼成及び篩別した粒子を10質量%となるように水に分散させ、アルティマイザー(スギノマシン社製)を用いて、噴射圧力150MPaで15回パスさせ、「微粒子b」を得た。「微粒子b」の個数平均粒径は237nmであり、体積平均粒径は670nmであった。図7にSEM写真を示す。
[抗ウイルス効果の評価(麻疹ウイルス)]
製造例1で得られた「超微粒子A」の懸濁液、比較製造例1で得られた「微粒子a」の懸濁液、比較製造例2で得られた「微粒子b」の懸濁液を、それぞれ滅菌生理食塩水で5質量%に調整し、「懸濁液試料」とした。
麻疹ウイルス液(45.0TCID50/μL)100μLに、上記3種類の懸濁液試料をそれぞれ、0.2質量%、0.1質量%となるように加えて、1分、3分、5分、10分後に、13000rpmで30秒間遠心処理した後、各上清液の麻疹ウイルス感染価を以下の方法で測定した。
[抗ウイルス効果の評価(インフルエンザウイルス)]
製造例1で得られた「超微粒子A」の懸濁液、比較製造例1で得られた「微粒子a」の懸濁液、比較製造例2で得られた「微粒子b」の懸濁液を、それぞれ滅菌生理食塩水で5質量%に調整し、「懸濁液試料」とした。
[抗ウイルス効果の評価(ネコカリシウイルス)]
製造例2で得られた「超微粒子B」及び比較製造例1で得られた「微粒子a」を、それぞれ5質量%蒸留水懸濁液としておき、最終濃度0.5質量%で用いた。
(1)被検ウイルス液を、血清の入っていないMEM培地で10倍ずつ段階希釈した。
(2)希釈後のウイルス液を、100μL/well、2穴ずつ接種した。
(3)34℃のCO2恒温器で、1時間ウイルスを吸着させた。
(4)1時間後、各穴に寒天培地を3mL/well加えた。
(5)プレートを逆さにして、34℃で3日間培養した。
(6)培養後、ホルマリンで細胞を固定し、固定後に寒天培地を流し、メチレンブルー染色後に洗浄、乾燥させてからプラックを数えた。
粒子の種類と接触時間の、ネコカリシウイルス感染価(PFU/100μL)に与える影響
[抗菌効果の評価(大腸菌、サルモネラ菌、黄色ブドウ球菌、緑膿菌)]
製造例1で得られた超微粒子Aを、0.15%の懸濁液に調整し、15秒、3分、10分、30分後の生菌数を測定し、結果を表3に示した。
Claims (15)
- 貝殻を焼成し超微粉砕してなる超微粒子であって、その一次粒子の短軸方向の個数平均長さ(a)が10nm〜100nmであることを特徴とする抗菌抗ウイルス剤。
- 一次粒子の長軸方向の個数平均長さ(b)が40nm〜200nmである請求項1記載の抗菌抗ウイルス剤。
- 貝殻を焼成し超微粉砕してなる超微粒子であって、その一次粒子が一定の粒径分布を有するように制御されて製造されたものである請求項1又は請求項2記載の抗菌抗ウイルス剤。
- 一次粒子の短軸方向の長さがa/2〜2aの範囲内に入っている超微粒子の個数が、全体の50個数%以上である請求項1ないし請求項3の何れかの請求項記載の抗菌抗ウイルス剤。
- 一次粒子の長軸方向の長さがb/2〜2bの範囲内に入っている超微粒子の個数が、全体の50個数%以上である請求項1ないし請求項4の何れかの請求項記載の抗菌抗ウイルス剤。
- 一次粒子が集合してなる二次粒子の個数平均粒径が150nm〜5000nm(5μm)である請求項1ないし請求項5の何れかの請求項記載の抗菌抗ウイルス剤。
- 貝殻を予備粉砕した後に焼成し、次いで、90%体積粒径が30μm以下になるように分級したものを、体積平均粒径が0.5μm〜10μmの範囲になるように微粉砕し、その後更に、湿式法によって超微粉砕して製造されたものであることを特徴とする請求項1ないし請求項6の何れかの請求項記載の抗菌抗ウイルス剤。
- 上記湿式法による超微粉砕が、ビーズ径0.05mm〜0.5mmの範囲内から選ばれるビーズ径を有するビーズを用いた湿式ビーズミルを用いてなされたものである請求項7記載の抗菌抗ウイルス剤。
- 上記微粉砕が、ジェットミルを用いて乾式法によってなされたものである請求項7又は請求項8記載の抗菌抗ウイルス剤。
- 貝殻がホタテガイの貝殻である請求項1ないし請求項9の何れかの請求項記載の抗菌抗ウイルス剤。
- ウイルスが、パラミクソウイルス科、オルトミクソウイルス科、コロナウイルス科又はカリシウイルス科に属するものである請求項1ないし請求項10の何れかの請求項記載の抗菌抗ウイルス剤。
- 請求項1ないし請求項11の何れかの請求項記載の抗菌抗ウイルス剤が懸濁されてなることを特徴とする抗菌抗ウイルス剤懸濁液。
- 分散剤を実質的に含有していない請求項12記載の抗菌抗ウイルス剤懸濁液。
- pH緩衝剤を実質的に含有していない請求項12又は請求項13記載の抗菌抗ウイルス剤懸濁液。
- 請求項1ないし請求項11の何れかの請求項記載の抗菌抗ウイルス剤を使用する方法であって、湿式法によって超微粉砕して得られた分散液の懸濁状態を実質的に保持しながら使用に供することを特徴とする抗菌抗ウイルス剤の使用方法。
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JP2012062257A (ja) * | 2010-09-14 | 2012-03-29 | Tahara Masanori | 貝殻焼成カルシウム粉体を用いた抗ウイルス材 |
JP6799415B2 (ja) * | 2016-08-10 | 2020-12-16 | 株式会社J−Style | ホタテ貝焼成粉末、その混合液、製造方法、および保存方法 |
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