What are the three R's used to preserve nutrients?

NHM UP Staff Nurse-2023 shift 1st

Applied Nutrition & Dietetics

Easy

Appeared in: NHM UP Staff Nurse-2023 shift 1st

Explanation

The correct option outlines the three fundamental principles for preserving nutrients during cooking.
Reduce water: Using minimal water for cooking prevents water-soluble vitamins like B-complex and C from dissolving and being lost in the cooking liquid.
Reduce cooking time: Many vitamins, especially Vitamin C and thiamine (B1), are sensitive to heat and are destroyed by prolonged cooking. Shorter cooking times help retain these nutrients.
Reduce surface area: Cutting vegetables into larger chunks minimizes the area exposed to air (oxidation) and water (leaching), which helps preserve their nutritional content.

Option A: This option incorrectly combines a dietary health guideline (reducing salt) and a food safety principle (reducing contamination) with a vaguely related concept (reducing cutting). These are not the established 'three R's' for nutrient preservation.
Option C: This option lists eating habits and post-meal activities. These are related to digestion and overall lifestyle but not to the methods of preparing food to retain its nutritional value.
Option D: This option describes lifestyle choices related to meal frequency and rest. These factors do not influence the nutrient content of food during its preparation.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Principles of nutrient preservation during food preparation as background academic context rather than a clinical decision trigger.
Nurses often provide dietary education to patients. Understanding how to preserve nutrients in food is crucial for advising patients with nutritional deficiencies, malabsorption issues, or those on therapeutic diets.
This knowledge is vital in community health settings when teaching families about healthy eating and cooking practices to maximize the nutritional benefit from available food resources.
What if? If a patient has a diagnosed Vitamin C deficiency (scurvy), the nurse should specifically advise them to eat fresh fruits and vegetables raw or use cooking methods like steaming for very short periods, as Vitamin C is highly sensitive to both heat and water.

How to Approach the Question

First, identify the core concept of the question, which is 'preserving nutrients'.
The keyword 'three R's' suggests a specific set of principles you need to recall.
Evaluate each option against your knowledge of food science and nutrition.
Option A mixes different concepts (health, safety, preparation).
Options C and D relate to lifestyle and eating habits, not food preparation.
Option B directly addresses the three main factors that cause nutrient loss during cooking: water, heat (time), and exposure to air/water (surface area). This makes it the most logical and correct answer.

Concept Tested & Keywords

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E6 textbook of Applied Biochemistry and Nutrition & DieteticsHarbans Lal (pp 26-464 of 479) p. 393-395

E6 Nutrition Monika Sharma 3e p. 274-276