This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'n–3 PUFA is present in all except – \nSelect and explain. \nA. Mustard oil, B. Corn oil, C. Fish oil, D. Groundnut oil', 'role': 'user'}, {'content': 'Answer: D \nExplanation: POLYUNSATURATED FATTYACEDS\xa0\n\nPolyunsaturated fatty acids have more than one double bond. According to the position of first double bond they or divided into\n\n1)\xa0\xa0 n-3 fatty acids or ω-3 fatty acids or omega-3 fatty acids\n\nThis are long-chain polyunsaturated fatty acids, with first double bond beginning at the third carbon atom (when counting form the methyl end of fatty acid).\nExample are α- linolenic acid, Timnodonic (Eicosapentaenoic) acid, cervonic (Docosahexaenoic acid).\nRich sources → wheat, bajara, mustard, fish, lobia, rajmah, black gram, soybean, green leafy vegetables.\n\n2)\xa0\xa0 n-6 or ω-6 or omega-6 fatty acids\n\nFirst double bond begins at the 6th carbon atom.\nExamples Linoleic acid, Arachidonic acid, γ-linolenic acid.\n\n\nRich sources → Groundnut oil & corn oil\n\nComing back to question\n\nBoth groundnut oil and corn oil are devoid of (0-3 fatty acids.\nHowever, corn oil has trace amount of w-3 fatty acids.\nSo, best answer of this question is groundnut oil.\n\nFollowing information have been added in 21st/e of Park\n\nThe WHO/FAO expert Group on diet, nutrition and prevention of chronic diseases endorse that qualitative composition of fats in the diet has a significant role to play in modifying risk factors for CHD and set the following ranges for population nutrient goals (% of energy) : -\n\n\nTotal fat intake, 20-30% of total energy intake (at least 20% energy is consistent with good health).\nSaturated fatty acids, less than 10% of total energy intake.\nPUFAs, 6-10% of total energy intake (minimum of 6%). ω-6 should be about 5-8% and ω-3 should be about 1-2%.\nTrans fatty acids should be less than I% of total energy intake.\nCholesterol should be less than 300 mg a day.\n\n\nIt is worth noting here that above values are for prevention of CHD. However, minimum intake levels for essential fatty acids to prevent deficiency symptoms are estimated to be 2.5% of total intake for lenoleic acid and 0.5% for Lenolenic acid (ALA).', 'role': 'assistant'}]