Table 4.

Screening for exopolysaccharide producers among A. pullulans strains obtained in two subsequent harvest seasons

Year	Isolate no.	Colony appearance	Growth intensity	Intensity of exopolysaccharide production
2016	LW25	Black-brown colonies, small round colonies	++++	++++
	LW12	Black-brown colonies, small round colonies	++++	++
	LW10	Black-brown colonies with wrinkled surface	+++	–
	LW80	No growth	–	–
2017	LW81	Black-brown colonies with wrinkled surface, small round colonies	++++	–
	LW13	Black-brown colonies, small round colonies	++++	++++
	LW14	Black-brown colonies, small round colonies	+++++	++++++
	LW16	Brown colonies with wrinkled surface	+++	++
	LW17	Beige-brown colonies	+++	–
	LW19	Brown colonies	++	–
	LW20	No growth	–	–
	LW21	Beige colonies, small round colonies	++++	–
	LW22	Black colonies with wrinkled surface	++++	–

‘–’ No growth/slimy colonies formation; ‘+’ very weak growth/slight colony sliminess; ‘++’ weak growth/slight colony sliminess; ‘+++’ moderate growth/slight colony sliminess; ‘++++’ good growth/slight colony sliminess; ‘+++++’ very good growth/slight colony sliminess. Isolate marked in bold was the most significant exopolysaccharide producer