Effectiveness of Essential Oils and Their Combinations with Aluminum Starch Octenylsuccinate on Potato Storage Pathogens

Abstract

S-carvone, L-menthone, peppermint and spearmint oils were tested in vitro against Fusarium coeruleum, F. sambucinum, F. avenaceum, F. oxysporum, Alternaria solani, Rhizoctonia solani, Helminthosporium solani, Phytophthora infestans (A1 and A2 mating types), Phytophthora erythroseptica, Phoma exigua and Pythium ultimum which are causal agents of major potato storage diseases. The majority of these pathogens were completely inhibited due to pure oils, although F. sambucinum, F. avenaceum, A. solani and P. exigua were not completely inhibited by one or more pure oils. Peppermint oil was the least effective among tested oils. However, R. solani, H. solani, P. erythroseptica, and P. infestans (A1 and A2 mating types) were completely inhibited for a period of 1-18 weeks by single treatments of all four pure oils. Effects of mixtures of aluminum starch octenylsuccinate (ASOS) and L-menthol or peppermint oil on F. sambucinum and R. solani were also tested in vitro for a period of over 5 weeks. Percent inhibition of F. sambucinum by single application of mixtures of ASOS and L-menthol or peppermint oil decreased over 11-13 days after treatment, while the mixtures at the same rates consistently inhibited the growth of R. solani for over 15 days. Mixtures of 10 g of ASOS and 4 g or 8 g doses of essential oils were the most effective in inhibiting pathogens growth for periods over 13 or 20 days, respectively. The antifungal effects of essential oils and their components against all tested pathogens suggest their potential use as alternative tools for controlling potato storage diseases.

Ammoides pusilla Essential Oil: A Potent Inhibitor of the Growth of Fusarium avenaceum and Its Enniatin Production

“…They are extracted from more than 17,000 aromatic plants belonging to angiosperm families: Lamiaceae, Rutaceae, Myrtaceae, Zingiberaceae and Asteraceae [14], and they have multiple antibacterial, antifungal, antiviral, antiparasitical, insecticidal, medicinal and cosmetic applications [15]. At least 16 different publications [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] presented data on EOs antifungal activities from 35 plants against F. avenaceum (Table 1). All the authors used either agar diffusion methods (paper discs or wells), or an agar dilution method.…”

Study on the inhibitory activity and mechanism of Mentha haplocalyx essential oils nanoemulsion against Fusarium oxysporum growth

“…L-menthone also has an excellent inhibitory effect on Fusarium sambucinum and Rhizoctonia solani. Many scientists have also found that components synergize when mixed with some antifungal agents [31]. After MEO was made into a nanoemulsion, the inhibitory effect on F. oxysporum was signi cantly improved because the main components, such as menthol, L-menthone, and menthyl acetate in the MNEO, were more abundant than those in MTEO.…”

Non-Essential Elements and Their Role in Sustainable Agriculture

“…Aluminium starch octenylsuccinate (ASOS), commonly used in the cosmetic industry as an anticaking agent, has been successfully combined with plant essential oils (from e.g., peppermint and spearmint) and plant terpenes (including l-menthone and S-carvone,) to inhibit several potato storage diseases caused by F. coeruleum, F. sambucinum, F. avenaceum, F. oxysporum, A. solani, R. solani, H. solani, P. infestans, P. erythroseptica, Phoma exigua, and Pythium ultimum. Mixtures of 10 g of ASOS and 4 g or 8 g of essential oils were the most effective in inhibiting these pathogens for periods over 13 or 20 days, respectively, particularly R. solani [84].…”