N = (V*W)/100

N = nutrient value per household measure,
V = nutrient value per 100 g (Nutr_Val in the Nutrient Data file), and W = g weight of portion (Gm_Wgt in the Weight file).

const fda = require('fda-nutrient-database')

nutrients = fda.abbreviated(cb)

This invokes the callback with an array of objects from the abreviated datafile:
{
  ndbNo: '09522',
  shortDescription: 'CRANBERRY JUC BLEND,100% JUC,BTLD,W/ ADDED VIT C & CA',
  water: 88.6,
  calories: 45,
  protein: 0.27,
  fat: 0.12,
  ash: 0.1,
  carbohydrate: 10.91,
  fiber: 0.1,
  sugar: 9.8,
  calcium: 19,
  iron: 0.08,
  magnesium: 5,
  phosphorus: 8,
  potassium: 76,
  sodium: 6,
  zinc: 0.05,
  copper: 0.016,
  manganese: 0.067,
  selenium: 0.1,
  vitaminC: 31.5,
  thiamin: 0.005,
  riboflavin: 0.015,
  niacin: 0.094,
  pantoAcid: 0,
  vitaminB6: 0.018,
  folateTotal: 18,
  folicAcid: 0,
  foodFolate: 18,
  folateDFE: 18,
  choline: 1.8,
  vitaminB12: 0,
  vitaminAIU: 25,
  vitaminARAE: 1,
  retinol: 0,
  alphaCarot: 0,
  betaCarot: 15,
  betaCrypt: 0,
  lycopene: 0,
  luteinZeazanthin: 68,
  vitaminE: 0.01,
  vitaminDMCG: 0,
  vitaminDIU: 0,
  vitaminK: 0,
  saturatedFat: 0.002,
  monosaturatedFat: 0.002,
  polyunsaturatedFat: 0.002,
  cholesterol: 0,
  weight1: 200,
  weight1Description: '6.75 fl oz',
  weight2: 240,
  weight2Description: '8 fl oz',
  refusePercent: 0
}

nutrients = fda.foodDescription(cb)

This invokes the callback with an array of objects from the food description datafile:
{
  ndbNo: '44203',
  foodGroupCode: '1400',
  longDescription: 'Beverages, Cocktail mix, non-alcoholic, concentrated, frozen',
  shortDescription: 'BEVERAGES,COCKTAIL MIX,NON-ALCOHOLIC,CONCD,FRZ',
  commonName: '',
  manufacturer: '',
  survey: true,
  refuseDescription: '',
  refuse: 0,
  scientificName: '',
  nitrogenFactor: 6.25,
  proteinFactor: 4,
  fatFactor: 9,
  carbohydrateFactor: 4
}