Emiko Nagai

Dr. Emiko Nagai

The University of Tokyo

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2019 in International Dairy Journal
Verified
Journal Article
Closed access
MIMahmoud Ibrahim
Mahmoud Ibrahim
EREhab Romeih
Ehab Romeih
RGRaúl Ricardo Gamba
Raúl Ricardo Gamba
ENEmiko Nagai
Emiko Nagai
TSTakuya Suzuki
Takuya Suzuki
TEToshiki Enomoto
Toshiki Enomoto

24 July 2020 in Foods
Verified
Journal Article
Open access
PDF file
STSoad Taha
Soad Taha
IEIbrahim M. El-Sherbiny
Ibrahim M. El-Sherbiny
TEToshiki Enomoto
Toshiki Enomoto
ASAida Salem
Aida Salem
ENEmiko Nagai
Emiko Nagai
MIMahmoud Ibrahim
Mahmoud Ibrahim
Curcumin is one of the most common spices worldwide. It has potential benefits, but its poor solubility and bioavailability have restricted its application. To overcome these problems, this study aimed to assess the efficacy of sodium caseinate (SC), α-lactalbumin (α-La), β-lactoglobulin (β-lg), whey protein concentrate (WPC) and whey protein isolate (WPI) as nanocarriers of curcumin. Furthermore, the antioxidant, anticancer and antimicrobial activities of the formed nanoparticles were examined. The physicochemical characteristics of the formed nanoparticles as well as the entrapment efficiency (%) and the in vitro behavior regarding the release of curcumin (%) were examined. The results showed that the formation of curcumin–milk protein nanoparticles enhanced both the entrapment efficiency and the in vitro behavior release of curcumin (%). Cur/β-lg nanoparticles had the highest antioxidant activity, while SC and WPC nanoparticles had the highest anticancer effect. The antimicrobial activity of the formed nanoparticles was much higher compared to curcumin and the native milk proteins.

15 November 2019 in Plant Foods for Human Nutrition
Verified
Journal Article
Closed access
PDF file
ENEmiko Nagai
Emiko Nagai
MIMiwa Iwai
Miwa Iwai
RKRitsuko Koketsu
Ritsuko Koketsu
YOYoshinobu Okuno
Yoshinobu Okuno
YSYuri Suzuki
Yuri Suzuki
YIYuji Isegawa
Yuji Isegawa

1 January 2017 in Japanese Journal of Complementary and Alternative Medicine
Verified
Journal Article
Closed access
PDF file
ENEmiko Nagai
Emiko Nagai
MOMizuho Okuda
Mizuho Okuda
LPLingfeng Pan
Lingfeng Pan
NSNobutaka Suzuki
Nobutaka Suzuki
HKHoko Kyo
Hoko Kyo
TEToshiki Enomoto
Toshiki Enomoto
目的:近年,インフルエンザウイルス(IFV)において薬剤耐性株が出現し始め,問題となっている.新たなIFVの予防法や治療法の開発を行うことを目的に,ハトムギ反応生成物 (Coix-seed Reactive Derivatives: CRD)エキスの抗IFV作用を検討した. 方法:MDCK細胞にH1N1 A/Puerto Rico/8/34(PR8)株を感染させ,CRDエキス含有培地で24時間培養した.24時間後に上清のみを回収し,上清中のウイルス力価をフォーカス法により測定した.PVPP処理によりCRDエキス中のポリフェノールを除去し,除去前のCRDエキスとの抗IFV作用を比較した. 結果:CRDエキスはPR8株の増殖を阻害した.また,Time of addition assayの結果,CRDエキスはIFVの吸着時を最も阻害していることが判明した.さらに,CRDエキスのPVPP処理による検討から,ポリフェノールが有効成分である可能性が示唆された. 結論:CRDエキスはPR8株に対して抗IFV作用を示し,さらにIFVの細胞への吸着阻害のみならず,IFVの増殖時においても阻害作用を示した.また,CRDエキスの抗IFV作用にはポリフェノールが関与していることが示唆された.