'%3e%3cpath%20d='M29.5529%2025.4577C28.9763%2024.0918%2028.1395%2022.8511%2027.0891%2021.8047C26.0419%2020.7553%2024.8014%2019.9186%2023.4361%2019.3408C23.4239%2019.3347%2023.4116%2019.3317%2023.3994%2019.3256C25.3039%2017.95%2026.5419%2015.7092%2026.5419%2013.1812C26.5419%208.99325%2023.1487%205.6001%2018.9608%205.6001C14.7729%205.6001%2011.3797%208.99325%2011.3797%2013.1812C11.3797%2015.7092%2012.6177%2017.95%2014.5222%2019.3286C14.51%2019.3347%2014.4977%2019.3378%2014.4855%2019.3439C13.116%2019.9216%2011.8871%2020.7501%2010.8325%2021.8078C9.78311%2022.8549%208.94642%2024.0954%208.36866%2025.4607C7.80106%2026.7974%207.49494%2028.2304%207.46687%2029.6823C7.46606%2029.7149%207.47178%2029.7474%207.4837%2029.7778C7.49563%2029.8082%207.51351%2029.8358%207.5363%2029.8592C7.55909%2029.8826%207.58633%2029.9011%207.6164%2029.9138C7.64648%2029.9265%207.67879%2029.933%207.71142%2029.933H9.54556C9.68007%2029.933%209.78706%2029.826%209.79011%2029.6945C9.85125%2027.3346%2010.7989%2025.1245%2012.4741%2023.4493C14.2073%2021.716%2016.5092%2020.7623%2018.9608%2020.7623C21.4124%2020.7623%2023.7143%2021.716%2025.4475%2023.4493C27.1227%2025.1245%2028.0703%2027.3346%2028.1315%2029.6945C28.1345%2029.829%2028.2415%2029.933%2028.376%2029.933H30.2102C30.2428%2029.933%2030.2751%2029.9265%2030.3052%2029.9138C30.3353%2029.9011%2030.3625%2029.8826%2030.3853%2029.8592C30.4081%2029.8358%2030.426%2029.8082%2030.4379%2029.7778C30.4498%2029.7474%2030.4555%2029.7149%2030.4547%2029.6823C30.4242%2028.2211%2030.1215%2026.7997%2029.5529%2025.4577ZM18.9608%2018.4391C17.5577%2018.4391%2016.2371%2017.8919%2015.2436%2016.8984C14.2501%2015.9049%2013.7029%2014.5843%2013.7029%2013.1812C13.7029%2011.7781%2014.2501%2010.4575%2015.2436%209.46401C16.2371%208.47052%2017.5577%207.92334%2018.9608%207.92334C20.3639%207.92334%2021.6845%208.47052%2022.678%209.46401C23.6715%2010.4575%2024.2187%2011.7781%2024.2187%2013.1812C24.2187%2014.5843%2023.6715%2015.9049%2022.678%2016.8984C21.6845%2017.8919%2020.3639%2018.4391%2018.9608%2018.4391Z'%20fill='white'/%3e%3c/g%3e%3c/svg%3e)
Prof. Ahmed Gabr
Professor
'%3e%3cpath%20d='M22.1642%2019.0924C21.7317%2018.068%2021.1041%2017.1375%2020.3163%2016.3527C19.5309%2015.5656%2018.6006%2014.9381%2017.5766%2014.5048C17.5674%2014.5002%2017.5582%2014.4979%2017.5491%2014.4933C18.9774%2013.4616%2019.9059%2011.7811%2019.9059%209.88504C19.9059%206.74408%2017.3611%204.19922%2014.2201%204.19922C11.0792%204.19922%208.53429%206.74408%208.53429%209.88504C8.53429%2011.7811%209.46282%2013.4616%2010.8912%2014.4956C10.882%2014.5002%2010.8728%2014.5025%2010.8636%2014.5071C9.83652%2014.9404%208.91487%2015.5617%208.1239%2016.355C7.33685%2017.1404%206.70933%2018.0707%206.276%2019.0947C5.85031%2020.0972%205.62072%2021.172%205.59967%2022.2609C5.59905%2022.2853%205.60335%2022.3097%205.61229%2022.3325C5.62123%2022.3553%205.63465%2022.376%205.65174%2022.3935C5.66883%2022.4111%205.68926%2022.425%205.71182%2022.4345C5.73437%2022.444%205.7586%2022.4489%205.78308%2022.4489H7.15868C7.25956%2022.4489%207.3398%2022.3686%207.3421%2022.2701C7.38795%2020.5001%208.09868%2018.8425%209.35506%2017.5861C10.655%2016.2862%2012.3814%2015.5709%2014.2201%2015.5709C16.0588%2015.5709%2017.7852%2016.2862%2019.0852%2017.5861C20.3415%2018.8425%2021.0523%2020.5001%2021.0981%2022.2701C21.1004%2022.3709%2021.1807%2022.4489%2021.2815%2022.4489H22.6571C22.6816%2022.4489%2022.7058%2022.444%2022.7284%2022.4345C22.751%2022.425%2022.7714%2022.4111%2022.7885%2022.3935C22.8056%2022.376%2022.819%2022.3553%2022.8279%2022.3325C22.8369%2022.3097%2022.8412%2022.2853%2022.8406%2022.2609C22.8176%2021.165%2022.5907%2020.0989%2022.1642%2019.0924ZM14.2201%2013.8284C13.1678%2013.8284%2012.1773%2013.418%2011.4322%2012.6729C10.6871%2011.9278%2010.2767%2010.9374%2010.2767%209.88504C10.2767%208.83271%2010.6871%207.84227%2011.4322%207.09715C12.1773%206.35204%2013.1678%205.94165%2014.2201%205.94165C15.2724%205.94165%2016.2629%206.35204%2017.008%207.09715C17.7531%207.84227%2018.1635%208.83271%2018.1635%209.88504C18.1635%2010.9374%2017.7531%2011.9278%2017.008%2012.6729C16.2629%2013.418%2015.2724%2013.8284%2014.2201%2013.8284Z'%20fill='%238590A2'/%3e%3c/g%3e%3c/svg%3e)
Co-authors
Following
Followers
Research Focus & Metrics
Explore full metrics on Scilit
Academic Career Length
15Years (2012-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 March 2013 in Food Research International
Journal Article
KRKavitha Ravichandran
Kavitha Ravichandran
NSNay Min Min Thaw Saw
Nay Min Min Thaw Saw
Adel Abdelrazek Abdelazim MohdalyAGAhmed Gabr
Ahmed GabrAKAnja Kastell
Anja Kastell
Iryna Smetanska +3
12 May 2012 in Journal of Food Science and Technology
Journal Article
KRKavitha Ravichandran
Kavitha RavichandranRPRavichandran Palaniraj
Ravichandran Palaniraj
NSNay Min Min Thaw Saw
Nay Min Min Thaw SawAGAhmed Gabr
Ahmed GabrAAAbdelrahman R. Ahmed
Abdelrahman R. Ahmed
Iryna Smetanska +1
15 April 2016 in Plant Cell, Tissue and Organ Culture (PCTOC)
Journal Article
AGAhmed Gabr
Ahmed Gabr
Hoda B MabrokKGKadry Z. Ghanem
Kadry Z. Ghanem
MBMichael Blaut
Michael Blaut
Iryna Smetanska1 December 2016 in Journal of Genetic Engineering and Biotechnology
Journal Article
AGAhmed Gabr
Ahmed GabrHGHassan Ghareeb
Hassan Ghareeb
Hattem Mohamed El-ShabrawiIryna SmetanskaSBS.A. Bekheet
S.A. Bekheet
In the present study, the effects of the metabolite elicitors chitosan, methyl jasmonate (MeJA) and salicylic acid (SA) as well as the hairy root transformation were tested for silymarin and phenolic compound accumulation in in vitro cultures of Milk thistle. For callus induction, leaf explants were cultured on MS medium supplemented with 5 mg/l NAA + 2 mg/l Kin + 0.1 mg/l GA3. Chitosan, SA and MeJA were added separately in three concentrations 200, 400 and 800 mg/l; 10, 20 and 40 mg/l; 20, 40 and 80 mg/l, respectively, to hormone free B5 medium. Alternatively, cotyledons of 12 day old seedlings were transformed with Agrobacterium rhizogenes A4 strain. Overall, increasing the concentrations of the three elicitors dramatically increased the total silymarin content. Remarkably, the elicitors mainly enhanced the accumulation of silybine A&B that were not detected in un-treated callus culture (control). In addition, the hairy root culture triggered the accumulation of silybine A&B, and silydianin, which was not detected in the non-transgenic roots. The hairy root culture was superior in production of the phenolic compounds in comparison to the control and elicitor treatments. The hairy root cultures showed also higher antioxidant capacities than non-transformed cultures and/or chemically elicited-callus cultures. Thus hairy root provide instrumental in enhancing the production of economically valuable metabolite.
20 November 2017 in Natural Product Research
Journal Article
AGAhmed Gabr
Ahmed GabrHoda B MabrokEAEmam A. Abdel-Rahim
Emam A. Abdel-Rahim
MEMohamed K. El-Bahr
Mohamed K. El-Bahr
Iryna SmetanskaHairy root culture is a promising alternative method for the production of secondary metabolites. In this study, transformed root of Linum usitatissimum was established using Agrobacterium rhizogenes A4 strain from root cultures for lignans, phenolic acids and antioxidant capacity determination. Total lignin content (secoisolariciresinol diglucoside, secoisolariciresinol and matairesinol) was 55.5% higher in transformed root cultures than in the non-transformed root culture. Secoisolariciresinol was detected in higher concentration (2.107 μmol/g DM) in the transformed root culture than non-transformed culture (1.099 μmol/g DM). Secoisolariciresinol diglucoside and matairesinol were exclusively detected in the transformed root culture, but were not found in the non-transformed root culture. The overall production of phenolic acids in transformed roots was approximately 3.5 times higher than that of the corresponding non-transformed culture. Free radical scavenging DPPH˙ and ABTS˙+ assays showed 2.9-fold and 1.76-fold higher anti-oxidant activity in transformed root culture as compared to non-transformed.
9 April 2019 in Physiology and Molecular Biology of Plants
Journal Article
AGAhmed Gabr
Ahmed Gabr
Oksana SytarHGHassan Ghareeb
Hassan Ghareeb
Marian BresticAbout Me
Prof. Dr. Ahmed Gabr, full Professor at National Research Centre (NRC), Egypt scince 31st December 2018, and acting as a vice head of Genetic Engineering and Biotechnology Research Division. I got several Postdoctoral fellowships; 2008 in the Institute for Ornamental and Woody Plant Science, Faculty of Natural Sciences, Hannover University, Germany (Project fund). From 2009 to 2011 at the Department of Methods in Food Biotechnology, Institute of Food Technology and Food Chemistry, Faculty of Process Sciences, Berlin University of Technology, Berlin, Germany. (October 2009- October 2011) (TU Alumni). 2015, Post-doctoral scholarship in University of Applied sciences, Weihenstephan-Triesdorf, Germany. Funded from Culture affairs and missions Sector, Ministry of Higher Education, Egypt. (1st May to 27th October 2015). 2017, Post-doctoral scholarship in University of Applied sciences, Weihenstephan-Triesdorf, Germany. Funded from the University (1st July to 28th September 2017). I had Diploma in Management of Technology (MOT), Nile University, Cairo, Egypt (March 2013 to June 2014). I had Invited by USDA for Information Tech tour through several cities in the US east coast (20th July to 31st July 2019) to visit several incubators, accelerator and start-ups in USA. And I had attended International training workshop on the Planning, Construction and Management of Business Incubators for the Belt and Road Countries”. MUST, Beijing, China (12nd September to 26th September 2019). I had