Based on the search results, here are the details about Beurre de cacahuète bioproduct:

Ingredients:

• Beurre de cacahuètes Bio - Go Nuts - 500 g: 100% peanuts
• Duerrs Beurre de Cacahuete 340g: Roasted peanuts, brown cane sugar, palm oil, salt, peanut oil

Positive aspects:

• Beurre de cacahuètes bio is certified organic and vegetarian.
• Beurre de cacahuètes Bio - Go Nuts - 500 g is certified organic, vegan, and biodynamic agriculture.
• Duerrs Beurre de Cacahuete 340g is made using 91.5% American peanuts and has no artificial additives or preservatives.

Negative aspects:

• None of the search results mention any negative aspects of Beurre de cacahuète bioproduct.

Other details:

• Beurre de cacahuètes Bio - Go Nuts - 500 g is certified by Ecocert, EU Organic, AB Agriculture Biologique, fr:Nature et Progrès, and Triman.
• The origin of the peanuts used in Beurre de cacahuètes Bio - Go Nuts - 500 g is Egypt.
• Duerrs Beurre de Cacahuete 340g contains palm oil.

Its worth noting that the search results only provide information about two specific brands of Beurre de cacahuète bioproduct, and there may be other brands with different ingredients and certifications.