yes
Limonene is a nonpolar solvent and extracted from lemon and orange peel so YES long chain fatty acid will dissolve in it. REMEMBER, fats are nonpolar substances.
limonene limonene
No.
d-limonene, aka (+)-limonene, was first identified in termpetine oil (0. Wallach and W. Brass, Liebigs Ann. Chem. 1884, 225, 291)
C4H16BR4. Limonene adds 4Br and the two double bond is broken.
it is a flavouring agent
Im not really sure about using volatile solvents to extract limonene in orange peelings, but you can use the maceration process which uses a neutral oil to release the natural oils in the peelings along with limonene and distill the oil produced to get limonene.
Pepsin begins the digetion of Protein. Pepsin is found in the stomach.
Bapna is the substrate that the enzyme, pepsin, is action on.
Pepsin in the stomach
Pepsin is produced in the stomach. Pepsin is an enzyme that digests (hydrolyses) proteins into smaller polypeptide molecules.