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Health Effects of Omega 3 6 9 Fatty Acids Abstract Perilla frutescens seeds are a good source of polyunsaturated omega 3 6 9 fatty acids (PUFAs). The seeds of perilla are small end globular weight about 4 g/1000, contained approximately 35–45% oil. However the leaves are a very poor source of oil, since they contain only 0.2%. In addition, only the seed oil contains the omega 3 fatty acids