Inclusion Criteria:  Male Chinese Ethnicity Age between 21-50 years Weight of at least 45 kg Body mass index between 18.5 - 25 kg/m2 (inclusive) Fasting blood glucose < 5.6 mmol/L Normal blood pressure ≤140/90 mmHg  Exclusion Criteria:  People who smoke People with any metabolic diseases or cardiovascular diseases (such as heart disease, hypertension, diabetes mellitus, etc.) Having any other diseases involving the small intestine or the colon (e.g., irritable bowel syndrome, inflammatory bowel disease, gastric reflux) or having any liver or kidney disorders or any family history of kidney stones People with known glucose-6-phosphate dehydrogenase (G6PD) deficiency Have any history of severe vasovagal syncope (blackouts or near faints) following blood draws People taking any prescribed medication or dietary supplements which may interfere with the study measurements People with medical conditions and/or taking medications known to affect glycaemia (glucocorticoids, thyroid hormones, thiazide diuretics) Individuals who have any major organ dysfunction (e.g. cardiovascular, respiratory, hepatic, renal, gastrointestinal) that may influence taste, olfaction, appetite, digestion, metabolism, absorption or elimination of test foods, nutraceutical or drug Individuals who have any known food allergies to the food components of the study protocol People who intentionally restrict food intake Individuals who partake in sports at the competitive and/or endurance levels People having active Tuberculosis (TB) or currently receiving treatment for TB People who have any known chronic infection or known to suffer from or have previously suffered from or is a carrier of Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), Human Immunodeficiency Virus (HIV) People who are a member of the research team or their immediate family members. Immediate family member is defined as a spouse, parent, child, or sibling, whether biological or legally adopted Have known history of anaemia or thalassemia minor Enrolled in a concurrent research study judged not to be scientifically or medically compatible with the study of the CNRC Participants who are found to be repeatedly difficult to cannulate