This document lists various fruits and vegetables considered to be negative calorie foods, along with their calorie content per 100 grams. Fruits listed include citrus, melon, pear, pineapple, watermelon, and apple, with calorie counts ranging from 30 to 85 calories per 100 grams. Vegetables listed include celery, lettuce, cucumber, pumpkin, onion, carrot, mushroom, pepper, eggplant, tomato, asparagus, cauliflower, and zucchini, with calorie counts ranging from 9 to 41 calories per 100 grams. The source is provided as the Spanish database of food composition from the Ministry of Science and Innovation.

1. Inmaculada Cámara Carpio
Some examples of negative calorie foods
FRUITS CITRUS 85 Kcal/100gr
MELON 36 Kcal/100gr
PEAR 87 Kcal/100gr
PINEAPPLE 50 Kcal/100gr
WATERMELON 30 Kcal/100gr
APPLE 49 Kcal/100gr
GRAPEFRUIT 50 Kcal/100gr
VEGETABLE CELERY 16 Kcal/100gr
LETTUCE 15 Kcal/100gr
CUCUMBER 16 Kcal/100gr
PUMPKIN 27 Kcal/100gr
ONION 32 Kcal/100gr
CARROT 41 Kcal/100gr
CHAMPIGNON MUSHROOM 35 Kcal/100gr
PEPPER 20 Kcal/100gr
AUBERGINE 20 Kcal/100gr
TOMATO 18 Kcal/100gr
ASPAGARUS 20 Kcal/100gr
CAULIFLOWER 9 Kcal/100gr
COURGETTE 17 Kcal/100gr
Ministerio de Ciencia e Innovación. Base de datos española de composición de
Alimentos. España: Base de Datos BEDC. Recuperado de http://www.bedca.net/