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Name : Omar Alhaj

Academic Rank: Associate Professor

Administrative Position : Head of Department

Office 8400       Ext No 8400

Email :

Specialization: Food science & Nutrition

Graduate Of: University of Wales

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    University of Baghdad
    University of Wales
    United Kingdom
    University of Wales
    United Kingdom

  • King Saud University, KSA, Assistant Professor & Dairy Biotechnologist December 2008 - Sep 2017.
  • QMS - Internal auditor and assessor - KSU February 2016 – Sep 2017.
  • University of Wales Institute cardiff, UK, Academic Associate, Health September 2003 - July 2008.

  • Book

      Omar Amin Alhaj, Bernard Faye, R. P. Agrawal, " Handbook of Research on Health and Environmental Benefits of Camel Products " , "Handbook of Research on Health and Environmental Benefits of Camel Products",Vol.1,No., IGI Global, USA, 04/15/2020 Abstract:
      In recent years, there has been a rise in the demand of alternative agricultural commodities, specifically camel milk-based products. Camel products have become highly coveted items in today’s commercial market due to their environmental and health advantages. However, there is a lack of research an Download

  • Journal Paper

      Amira M. Amr, Hamed R. Takruri, Maha S. Shomaf, Omar A. Alhaj, “Mo'ez Al-Islam" E. Faris and Wael M. Abdel-Rahman, " Fermented Camel (Camelus dromedarius) and Bovine Milk Attenuate Azoxymethane-induced Colonic Aberrant Crypt Foci in Fischer 344 Rats " , "Pakistan Journal of Nutrition",Vol.,No., -, , 03/15/2018 Abstract:
      Camel milk is a folk remedy that includes valuable nutrients and bioactive zoochemicals. however, the chemopreventive potenial of camel milk against colon carcinogenisis is poorly understood

      Mohammed A. Yahya, Omar A. Alhaj, Abdullrahman S. AL-Khalifah & Ahmad T. Almnaizel, " Hypocholesterolemic effect of camel milk on rats fed a high-cholesterol diet " , "Emirates Journal of Food and Agriculture",Vol.,No., -, , 03/13/2018 Abstract:
      The effects of fermented skim milk versus unfermented skim milk of camel on the levels of cholesterol in blood were investigated in rats. Levels of serum cholesterol and LDL-C/HDL-C ratio were decreased significantly in Wistar rats that fed with a cholesterol-enriched diet and administered fermented

      OMAR A ALHAJ, ALI A METWALLI , ELSAYED A ISMAIL, HATEM S ALI, ABDULRAHMAN S AL-KHALIFA1 and ARA D KANEKANIAN, " Angiotensin converting enzyme-inhibitory activity and antimicrobial effect of fermented camel milk (Camelus dromedarius) " , "Dairy Technology",Vol.,No., -, , 02/01/2018 Abstract:
      This study aimed to determine the angiotensin converting enzyme-inhibitory activity and antimicrobial effect of fermented camel milk. Samples were prepared either using Lactobacillus acidophilus and Streptococcus thermophilus or Lactobacillus helveticus and Str. thermophilus and labelled as S1 an

      Omar Amin Alhaj, " Identification of potential ACE-inhibitory peptides from dromedary fermented camel milk " , "CyTA - Journal of Food",Vol.,No., Informa UK Limited, trading as Taylor & Francis Group, , 12/05/2016 Abstract:
      Camel milk is a good nutritional source for people living in the arid and urban areas. This study aim to identify ACE-inhibitory peptides from dromedary camel milk produced using Lactobacillus helveticus or Lactobacillus acidophilus.

      Mohammed A. Yahya, Omar A. Alhaj and Abdullrahman S. Al-Khalifah, " Antihypertensive effect of fermented skim camel (Camelus dromedarius) milk on spontaneously hypertensive rats " , "Nutrición Hospitalaria",Vol.,No., -, , 07/04/2016 Abstract:
      Background: Hypertension is one of the most common diseases in worldwide, thus prevention of hypertension is important in reducing the risks of cardiovascular disease. Milk contains bioactive peptides released during milk fermentation which lead to exhibit angiotensin I converting enzyme (ACE) inh

      Alhaj O. A, Irshad I and Kanekanian A. D, " Hypocholesterolemic and Angiotensin I Converting Enzyme-Inhibiting Activity of Trypsin-Hydrolysed Bovine Casein Submit Manuscript " , "Journal of Nutritional Health & Food Engineering",Vol.,No., -, , 12/02/2016 Abstract:
      Nowadays, the need for new dietary containing some bioactive peptides with specific amino acid sequences increased to express biological functions. We investigated the hypocholesterolemic effect and ACE-inhibiting activity of bovine casein hydrolysates with different molecular weights.

      Murad A. Al-Holy, Mengshi Lin, Omar A. Alhaj, and Mahmoud H. Abu-Goush, " Discrimination between Bacillus and Alicyclobacillus Isolates in Apple Juice by Fourier Transform Infrared Spectroscopy and Multivariate Analysis " , "Journal of Food Science",Vol.,No., -, , 03/01/2015 Abstract:
      Alicyclobacillus is a causative agent of spoilage in pasteurized and heat-treated apple juice products. Differentiating between this genus and the closely related Bacillus is crucially important. In this study,

      Abdulrahman A. Al-Saleh, Ali A.M. Metwalli, Elsayed A. Ismail and Omar A. Alhaj, " Antioxidative activity of camel milk casein hyrolysates " , "Journal of Camel Practice and Research",Vol.,No., -, , 12/01/2014 Abstract:
      Camel and cow milk casein were hydrolysed using trypsin enzyme for 0 to 180 min. Total phenol compounds, reducing power, 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) scavenging activity and lipid hydroperoxide were determined as indi

      Hatem Salama Mohamed Ali • Omar Amin Alhaj • Abdulrahman Saleh Al-Khalifa • ans Bru¨ckner, " Determination and stereochemistry of proteinogenic and non-proteinogenic amino acids in Saudi Arabian date fruits " , "Springer-Verlag Wien",Vol.,No., -, , 06/18/2014 Abstract:
      Whereas an abundance of literature is available on the occurrence of common proteinogenic amino acids (AAs) in edible fruits of the date palm (Phoenix dactylifera L.), recent reports on non-proteinogenic (non-coded) AAs and amino components are scarce. With emphasis on these components we have

      Metwalli, A. A. M. ; Ismail *, E. A. ; Alhaj, O.A. ; Saleh, K. A. and Ibrahim, F.S., " The effect of urea and formaldehyde on heat coagulation time (HCT) of camel milk " , "Life Science Journal",Vol.,No., -, , 09/25/2013 Abstract:
      Heat coagulation time-pH curve (HCT/pH) of camel milk in the range of pH 6.4-7.2 was determined at 120 0C. The effect of dialysis of camel milk against Jennes and Koops buffer on HCT was determined. Moreover, the addition of camel milk whey and casein addition as well as urea, formaldehyde and mix

      O.A. Alhaj , E. Taufik , Y. Handa , K. Fukuda , T. Saito c, T. Urashima, " Chemical characterisation of oligosaccharides in commercially pasteurised dromedary camel (Camelus dromedarius) milk " , "International Dairy Journal",Vol.,No., Elsevier Ltd., , 08/27/2012 Abstract:
      It has been suggested that bactrian camel milk and colostrum may be a good source of biologically significant oligosaccharides but, although the oligosaccharides found in bactrian camel milk and colostrum have been characterised, those in dromedary camel milk have not. In this study, seven oligosa

      Omar A. Alhaj, Ali A. M. Metwalli and Elsayed A. Ismail, " Heat stability of camel milk proteins after sterilization process " , "Journal of Camel Practice and Research",Vol.,No., -, , 12/01/2011 Abstract:
      In this study, the problem associated with stability of camel milk proteins after sterilisation process were studied and discussed. Camel milk has poor heat stability at high temperature and could not be sterilised at natural pH. Various attempts were adopted to overcome this problem including the a

      Omar A. Alhaj, Ara D. Kanekanian , Adrian C. Peters, Arthur S. Tatham, " Hypocholesterolaemic effect of Bifidobacterium animalis subsp. lactis (Bb12) and trypsin casein hydrolysate " , "Food Chemistry",Vol.,No., Elsevier Ltd., , 04/26/2010 Abstract:
      Hypercholesterolaemia is one of the most important risk factors in the development of cardiovascular disease. In this study, we report the in vitro potential of Bifidobacterium animalis subsp. lactis (Bb12) cultures and bovine casein hydrolysates formed by trypsin and Bb12 culture to reduce choles

      Omar A. Al haj, Hamad A. Al Kanhal, " Compositional, technological and nutritional aspects of dromedary camel milk " , "International Dairy Journal",Vol.,No., Elsevier Ltd., , 04/11/2010 Abstract:
      A comprehensive review on Dromedary camel milk composition in comparison with bovine milk, the factors effecting camel milk composition, and an overview of production, properties, nutrition value, dairy products and functionality is provided. The mean values of camel milk composition reported from

      Omar A. Alhaj, Ara D. Kanekanian and Adrian C. Peters, " (Investigation on whey proteins profile of commercially available milk-based probiotics health drinks using fast protein liquid chromatography (FPLC " , "British Food Journal",Vol.,No., -, , 01/01/2007 Abstract:
      Purpose – The main aim of this study is to investigate the whey protein profiles of different commercially available fermented milk drinks that might have been influenced by the growth of probiotics bacteria that have been added according to the claims made by the manufacturer. Design/methodology

      Mohamed A. A., Hussain S., Alamri M. S., Ibraheem, M. A, Qasem A. A. A., Alhaj O. A., and Alshuniaber M. A. , " Rheological and Structural Properties of Camel Milk/Sweet Potato Starch Gel " , "Journal of Chemistry",Vol.8,No., Hindawi, USA, 08/10/2019 Abstract:
      *e unique composition of camel milk limited its use for fermented products preparation. In this research, camel milk (CAM) or cow milk (COM) was blended with sweet potato starch (SPS). Blends were precooked and the rheological properties of the gel were determined. Since the elastic modulus (G′) w

      Haitham Jahrami; Eman Alekri; Ahmed BaHammam; Ali Alsalman; Nicola Bragazzi; Omar Alhaj; Zahra Saif, " The association between micronutrient status and sleep quality in patients with depression: A case-control study " , "Sleep and Breathing",Vol.23,No., Springer, US, 10/17/2020 Abstract:
      Purpose Few previous studies estimated the association between micronutrient status and sleep quality; no previous work was done in patients with depression compared with healthy controls. Methods Using a case-control design, 96 patients with depression were age- and sex-matched with 96 healthy

      Mohamed Alabbasi, Yusuf Bucheery, Abdulrahman Masood, Mai Salah Yousuf Sater, Eman Ahmed Haji,Haifa Mohammed Saleh Al Gahtani, Omar Alhaj, Haitham Jahrami, " The Association between Depression and the Dietary Intakes of Tryptophan and Vitamin B6 " , "Canadian Journal of Clinical Nutrition",Vol.9,No., Global Science Heritage, Canada, 01/01/2021 Abstract:
      Background: Tryptophan is an essential amino acid that is converted to serotonin in the central nervous system (CNS), with vitamin B6 as a cofactor. Serotonin levels are inversely related to the occurrence of depression. We hypothesized that cases with depression have less tryptophan and vitamin B6

      Haitham Jahrami *, Ammar Abdelaziz, Latifa Binsanad, Omar Alhaj, Mohamed Buheji, Nicola Luigi Bragazzi *, Zahra Saif, Ahmed BaHammam, Michael V. Vitiello, " The Association between Symptoms of Nomophobia, Insomnia and Food Addiction among Young Adults: Findings of an Exploratory Cross-Sectional Survey " , "International Journal of Environmental Research and Public Health",Vol.18,No., MDPI, Switzland, 01/12/2021 Abstract:
      No previous research has examined the association between symptoms of nomophobia and food addiction. Similarly, only a few studies have examined the association between nomophobia and symptoms of insomnia. This exploratory study utilized an online self-administered, structured questionnaire that inc

      Nour A. Elsahoury*, Omar Alhaj, Andrea M. McGrattan and Fwziah J Hammad, " Energy drinks consumption, knowledge and experienced effect among university students in Jordan: Cross-sectional study " , "Current Nutrition & Food Science",Vol.17,No., Bentham sciences, Malaysia, 01/06/2021 Abstract:
      Background: Consumption of energy drinks (EDs) has increased exponentially among younger generations and this increase is projected to continue. Objectives: This study aimed to examine the prevalence, knowledge level, intake patterns, and consumer experience of consuming EDs among university stud

      Omar A. Alhaj , Nour A. Elsahoryi, Ahmad Alathamneh, Manar Wishah, Ahmad F. Alenezi, Ali Humood, Abdulrahman Janahi, Noor Altouq, Haitham Jahrami , " Knowledge and perception of the ketogenic diet followers among Arab adults in seventeen countries " , "Obesity Medicine",Vol.25,No., Elsevier, United Kingdom , 06/03/2021

      8. Janahi, A. I.; Mahmoud I. F, AlAlhareth, I. M.; Almisrea, S.N. Alnakhli, A.Y.; Aljohani, H.M.; Alhaj, O. A.; Bakri, A.; Jahrami, H, " Knowledge, patterns of consumption, and attitudes of patients with major depression disorders towards probiotics. " , "Nutrition and Food science",,No., Bentham, uk, 03/16/2021

      7. Alenezi, A.F., Aljowder, A., Almarzooqi, M.J., Alsayed, M., Aldoseri, R., Alhaj, O., Souraya, S., Thornicroft, G. and Jahrami, H, " Translation and validation of the Arabic version of the barrier to access to care evaluation (BACE) scale" " , "Mental Health and Social Inclusion",,No., Emerald, na, 07/29/2021 Abstract:
      Abstract Purpose This paper aims to translate and validate an Arabic version of the Barriers to Access to Care Evaluation (BACE) BACE scale to make it appropriate for the targeted socio-cultural and linguistic context. Design/methodology/approach This psychometric study has two main compounds:

      5. Alhaj, OA, Al-Sayyed HF, AlRasheed MM, Jahrami H , " Appraisal Survey of the Knowledge, Attitudes, and Behaviors of Jordanian Society toward Diet and Nutrition during COVID-19 era. " , "Journal of Public Health research.",,No., page press, Italy, 06/09/2021 Abstract:
      Introduction: This study aimed to evaluate the knowledge, attitudes, and behavior (KAB) of the Jordanian society toward nutrition and diet during the COVID-19 era. Design and methods: This study is an observational, cross-sectional study using a structured, validated, reproducible, self-administere

      4. AlRasheed, M. M., AlShahrani, A. H., AlMuhaini, S. A., AlKofide, H. A., Alhawassi, T. M., Aldemerdash, A. F., Alhaj, O. A., Bragazzi, N. L., Jahrami, H. A. , " Knowledge, Attitude, and Practice towards COVID-19 among Pharmacists: A Cross-Sectional study. " , "Risk Management and Healthcare Policy",Vol.14,No., dove press, Italy, 08/01/2021 Abstract:
      Purpose: The COVID-19 outbreak has caused governments to put pandemic-related guidelines requiring compliance and understanding by healthcare professionals to mitigate its spread uncontrollably. We studied pharmacists’ knowledge, attitude, and practice towards the COVD-19 outbreak compared with othe

      3. Alshuniaber, M.; Alhaj, O.A.; Abdallah, Q.; Jahrami, H. , " Effects of Camel Milk Hydrolysate on Blood Pressure and Biochemical Parameters in Fructose-induced Hypertensive Rats. " , "Nutrition and Food Science.",,No., Emelard, na, 08/24/2021 Abstract:
      Purpose This study aims to investigate the antihypertensive effect of camel milk hydrolysate in rats with fructose-induced hypertension. Design/methodology/approach The antihypertensive effect of fermented camel milk was determined using 6 groups comprising 36 Wistar male rats. Blood pressure o

  • Chapter in a Book

      Omar Amin Alhaj, " Functional properties of camel milk, in Exploring the Nutritional and Health Benefits of Functional Foods " , "Exploring the Nutrition and Health Benefits of Functional Foods",Vol.,No., IGI Global, Pennsylvania, USA, , 08/18/2016 Abstract:
      This chapter focuses on the potential health benefits of camel milk including angiotension I-converting enzyme-inhibitory, anti-cancer and antioxidant activities, antidiabetic, antimicrobial and hypoallergenicity effects. The bioactivity of oligosaccharide, conjugated linoleic acid and D-amino aci

      Omar Amin Alhaj & Ara Kanekanian, " Milk-derived Bioactive Components from Fermentation, in Milk and Dairy Products as Functional Foods " , "Milk and Dairy Products as Functional Foods",Vol.,No., John Wiley & Sons, Ltd, Chichester, UK, , 06/09/2014

      Omar Amin Alhaj, " Exploring Potential Therapeutic Properties of Camel Milk " , "Handbook of Research on Health and Environmental Benefits of Camel ProductsChapter",Vol.7,No., IGI Global, USA, 04/15/2020 Abstract:
      This chapter highlights the potential health benefits of camel milk including antioxidant, anti-cancer activity, antihypertensive properties, antidiabetic activity, antimicrobial activity, hypoallergenicity activity, and anti-Crohn’s disease. In addition to the most recent identified functional prop

  • Conference paper

      ALI H.S.M, Alhaj O. A., Brueckner H, Al-khalifa A.S., " Detection and relevance of minor amino acids and amino components in Saudi date fruits. " , " Fifth International Date Palm Conference, Abu Dhabi, United Arab Emirates.",Vol.,No., -, , 03/18/2014 Abstract:

      Alhaj O. A., Ismail E. A., Ali, H. S., Metwalli A. A. and Al-Khalifa A. S. , " Angiotensin Converting Enzyme (ACE) - Inhibitory activity of camel milk (Camelus dromedarius) fermented with Lactobacillus spp. " , "Melbourne, Australia",Vol.,No., -, , 01/01/2014 Abstract:

      Alhaj O. A., Brückner H., and Al-Khalifa A. S., " Identification of ACE-Inhibitory Precursor Peptides From Fermented Camel Milk (Camelus dromedarius) Produced By Lactobacillus helveticus or Lactobacillus acidophilus Using HPLC-MS. " , " 2nd Kiel Food Science Symposium, Kiel, Germany.",Vol.,No., -, , 05/23/2012 Abstract:

      Alhaj O. A., Kanekanian A., and Peters A. , " The effect of Bifidbacterium lactis and Trypsin on Cholesterol. " , "Conference Proceedings- International Food & Health Innovation Conference, Malmö, Sweden.",Vol.,No., -, , 02/01/2006 Abstract:

      Alhaj O. A., Kanekanian A., and Peters A., " Investigation Into the Effect of Different Strains of Probiotics on Bovine Protein Profile Using FPLC. " , "The 4th NIZO Dairy Conference: Prospects for Health, Well-Being & Safety, Papendal, the Netherlands.",Vol.,No., -, , 06/17/2005 Abstract:

  • Patent

      Omar Amin Alhaj, et al., " Method of making a fermented dairy product from camel milk " , "United State Patent and Trademark Office",Vol.,No., United State Patent and Trademark Office , , 04/14/2017 Abstract:
      The method of making a fermented dairy product from camel milk includes heating camel milk at 85°C for thirty minutes, cooling the milk to about 60°C and adding a stabilizer or hydrocolloid (preferably 0.02% by weight κ-carrageenan) to avoid whey off (whey separation) problems, then cooling the milk

  • Project

      Alhaj O. A., Metwalli A. M., and Ismail E. A., Ali, H. M., Al-Khalifa, " The Effects of High Hydrostatic Pressure-Assisted Processing on Bacterial Pathogens, Spores and Yeast Inactivation Kinetics and Physico-Chemical Properties in Camel Milk, Grape Juice, and Tomato Puree " , "King Abdulaziz City for Science and Technology",Vol.,No., -, , 04/01/2014 Abstract:

      Alhaj O. A., Metwalli A. M., and Ismail E. A., Ali, H. M., Al-Khalifa, " Determination of the entire amino acid composition including stereoisomers in Saudi ripe date palm fruit (Phoenix dactylifera) using advanced analytical methods (HPLC and GC-MS) " , "King Abdulaziz City for Science and Technology",Vol.,No., -, , 04/01/2012 Abstract:

      Alhaj O. A., Metwalli A. M., and Ismail E. A., Ali, H. M., Al-Khalifa, " Determination of bioactive peptides and amino acid stereoisomers in Saudi fermented camel milk using advanced analytical methods GC-MS, HPLC, LC-MS and production of functional dairy products " , "National Plan for Science & Technology, King Saud University",Vol.,No., -, , 07/01/2011 Abstract:

      Alhaj O. A., Metwalli A. M., and Ismail E. A., Ali, H. M., Al-Khalifa, " Heat stability of camel milk proteins after sterilization process, Co-PI, Deanship of Scientific Research " , "King Saud University",Vol.,No., -, , 11/01/2011 Abstract:

      Alhaj O. A., Metwalli A. M., and Ismail E. A., Ali, H. M., Al-Khalifa, " Production and sensory evaluation of functional product produced from camel’s and cow’s milk using probiotic strains and enzymes " , "Agricultural Research Centre, King Saud University",Vol.,No., -, , 01/01/2009 Abstract:
  • Event Calendar
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