Probably not, well, let me explain that.
Maple syrup is essentially sugar (with flavor). If it is commercial "maple" syrup, it is likely so full of preservatives, it will outlive you. If it is natural maple syrup, it is likely to crystallize or ferment rather than spoil. If you eat too much of it, then you might get sick, but "too much" is subjectively a quantitative not qualitative matter.
Hint: if it is cloudy, it is suspect; avoid eating it.
I highly doubt it, I have lite syrup in my pantry that I use on a weekly basis unrefrigerated and it even says on the bottle it doesn't have to be placed in the fridge. You should be fine.
Maple syrup is made from the sap of the Maple Tree.
The sugar in maple syrup is sucrose with small amounts of glucose.
Bruce S. Thompson has written: 'Syrup trees' -- subject(s): Cookery (Maple sugar and syrup), Maple, Maple syrup, Sugar maple
The Sugar Maple is most commonly used to make maple syrup. Other maples that can be used include the Red Maple, Silver Maple, Boxelder and Black Maple. Sugar Maple is generally preferred since its sap has a higher sugar content.
C. F. Coons has written: 'Sugar bush management for maple syrup producers' -- subject(s): Sugar maple, Maple syrup, Maple sugar
Vermont has the highest production of maple syrup in the U.S.
sugar
A person who makes syrup is called a sugar maker.
maple syrup
Ken Haedrich has written: 'Home for the Holidays' -- subject(s): Baking, Cookery (Cereals), Holiday cookery 'Maple Syrup Baking and Dessert Cookbook' 'The maple syrup cookbook' -- subject(s): Cookery (Maple sugar and syrup), Maple syrup, Cooking (Maple sugar and syrup) 'Country Baking'
Maple
You cannot. Maple syrup can only be made by concentrating maple sap. You can make artificial maple-flavored TABLE syrup using these ingredients.