Data Views Total Plants: 3 CSV Excel PDF Click on column headings to sort table by that column Plant Part All Fruit Fruit Essent. Oil Silk Stigma Style Low PPM High PPM StdDev *Reference Tamarindus indica Fruit Essent. Oil -- 27300.0 * Carica papaya Fruit -- 0.006 Jim Duke's personal files. Zea mays Silk Stigma Style -- -- * *Unless otherwise noted all references are to Duke, James A. 1992. Handbook of phytochemical constituents of GRAS herbs and other economic plants. Boca Raton, FL. CRC Press.