2.Heat oil and garlic in large saucepan; cook mushrooms for 2 minutes. Add scallions, pepper and cabbage; cook, covered, until cabbage is wilted.
3.Stir in sauce. Divide mixture among wrappers; fold sides in, roll up.
4.Brush rolls lightly with egg white; place on parchment-paper-covered baking sheet. Bake 25 minutes or until lightly browned.
5.To make sweet and sour sauce; combine juice, vinegar, ketchup and sugar in medium saucepan. Blend cornstarch and the water; add to pan. Stir over heat until sauce boils and thickens slightly. Serve spring rolls with sauce.
Uncooked spring rolls can be prepared 3 hours ahead; cover, refrigerate until required. Bake just before serving.