Measurement of micronutrients in vegetables submitted to different methods of cooking for patient with chronic kidney disease

Abstract

Introduction: Appropriate cooking methods are important for the good nutrition of the patient with Chronic Kidney Disease (CKD). Objective: To quantify Na, K and P in vegetables for indicate to the patients with CKD. Method: We quantified the content of sodium, potassium and phosphorus of the carrot and English potato submitted to four approaches of cooking: in water, by steam, by irradiation in a microwave oven and dehydration. Results: For the carrot, the highest reduction of Na (37.0%) and K (33.7%) were obtained by boiling in water, and of P (18.3%) by steam. In potato, there was a decrease of P (55.1%) and of K (33.8%) by cooking in water and an addition of Na, after all processes. Conclusion: The most indicated methods of preparing these foods for patients with CKD were cooking it in water and in vaccum, should be avoided dehydration.