Depends. Frozen Green Beans According to a UC Davis study, green beans can lose as much as 77% of their vitamin C content when stored at 4°C (39°F) for seven days. Not so much. This loss will increase to a whopping 90% if the beans are stored for 16 days in the refrigerator, says … Fresh vegetables have a reputation for being a little more pricey than their frozen or canned counterparts. When it's in full outdoor season locally, fresh broccoli is dirt cheap - and will almost always be cheaper than frozen. Selected nutrient analyses of fresh, fresh-stored, and frozen fruits and vegetables DOI: 10.1016/j.jfca.2017.02.002 In fact, the study showed that fresh produce scored worse than frozen … The rest of the year? Flickr/With Wind When it comes to vitamin C, for example, fresh vegetables typically contain higher amounts than frozen or canned veggies, a study in the journal Food Chemistry found. Fresh vs.