Glazed Banana Bread Bundt Cake

Name: Glazed Banana Bread Bundt Cake
Ingredients: CAKE; 1 1/3 cups all-purpose flour; 1 1/3 cups whole wheat flour; 1 1/3 cups toasted wheat germ; 1 teaspoon salt; 2 cups granulated sweetener (I used half Splenda, half sugar); 1/2 cup butter, softened (vegan butter works too); 4 large eggs; 6 very ripe bananas, mashed; 2/3 cup unsweetened applesauce; 2 teaspoons vanilla extract; SUGAR-LEMON GLAZE; 1/4 cup unsalted butter, melted; 2 cups powdered sugar; 1 teaspoon lemon extract; 1/8 cup milk, or more as needed; Lemon zest (optional)