Evaluating the impact of biological products with Arbuscular mycorrhizal fungi on starch, vitamin C and antioxidant contents in potatoes

The results of a microfield experiment using the biopreparation with 4 varieties of Arbuscular mycorrhizal fungi (Glomus aggregatum, Glomus etunicatum, Glomus introradices, Glomus mosseae) in growing potatoes were considered in the research paper.The experiment included 2 groups: 1) control one, and 2) treated with biopreparation (AMH).A four-fold replication on the land plot sized 50 square meters was provided.The biopreparation was introduced at a dose of 0.1 g/square meter during potato growing.In mature potato tubers, polarimetric method was used to determine the starch content, a visual titration method to evaluate vitamin C content, spectrophotometric method using Folin reagent for polyphenol content, titration with potassium permanganate for antioxidant activity, and ion-selective electrode on an ion meter -for nitrate content.The research study showed that useful microorganisms such as Arbuscular mycorrhizal fungi introduced to the soil when planting Udacha potatoes contributed to improving potato quality.The dry matter, ascorbic acid (vitamin C), starch, polyphenol contents were higher in the tubers from the treatment group compared to those from the control group.As far as the antioxidant activity is concerned, its level was also enhanced in treated potatoes, while the nitrates content decreased.