There are 5 peanut proteins (Ara 1 1/2/3/5/8) that are associated with peanut allergies, with Ara h 1 being the most common (~90% of people with peanut allergie

There are 5 peanut proteins (Ara 1 1/2/3/5/8) that are associated with peanut allergies, with Ara h 1 being the most common (~90% of people with peanut allergies are allergic to h 1). This study -- https://onlinelibrary.wiley.com/doi/abs/10.1034/j.1398-9995.2001.056002132.x https://onlinelibrary.wiley.com/doi/abs/10.1034/j.1398-9995.... "Quantification of major peanut allergens Ara h 1 and Ara h 2 in the peanut varieties Runner, Spanish, Virginia, and Valencia, bred in different parts of the world" concluded: "The results suggest that peanuts of different varieties, and from different parts of the world contain similar proteins, including Ara h 1 and Ara h 2. Consequently, the IgE-binding properties are similar to a great extent. This indicates that differences in the serology of peanut allergy may not originate from differences in the allergen composition of the peanut." So probably no difference with 1690s either.