تصنيف:قلويدات
القلويد alkaloid هو جزيء عضوي نيتروجيني يتواجد في الطبيعة وله تأثير دوائي على البشر والحيوانات. The name derives from the word alkaline; originally, the term was used to describe any nitrogen-containing base (an amine in modern terms). Alkaloids are found in plants (e.g., in potatoes and tomatoes), animals (e.g., in shellfish) and fungi (e.g., in mushrooms), and can be extracted from their sources by treatment with acids (usually hydrochloric acid or حمض الكبريتيك, though organic acids such as maleic acid and حمض الستريك are sometimes used).