Vol. 11 No. 2 (1977)

. The ultrastructure of cells of the Sclerotia of Sclerotinia sclerotiorum (Lib.) de Bary was studied by electron microscopy. A mature sclerotium of S. sclerotiorum contains several types of differentiated cells. The thick-waller rind cells which comprise the sclerotial envelope are empty and have a rough outer electron-dense layer which is absent from the other walls. A mucilaginous sheath was observed around medullary hyphae and the cell contains comprise typical neclei, mitochondria, lipid bodies, Woronin bodies, endoplasm with a surrounding plasmalemna and a sparse endoplasmic reticulum…

Ringkasan. Di sini dikemukakan suatu metoda lapisan tipis yang cepat dan baik untuk mengidentifikasi adanya asam bongkrek di dalam bahan makanan dengan menggunakan Silica gel G, H atau GF dan sistem eluen methanol-etilasetat (1: 1; v/v). Identifikasi noda-noda dilakukan di bawah sinar UV atau dengan uap iodium. Harga Rf yang diperoleh dibandingkan dengan harga Rf zat standar asam bongkrek. Ekstraksi asam bongkrek dilakukan sebagai berikut: 10 gram bahan makanan yang dikeringkan diekstraksi dengan 30 ml petroleum

. Recent solar radiation data in different parts of Malaysia indicates that Malaysia has an abundant energy resource that could be tapped and used for agricultural processing. A brief survey on the potential uses of this solar energy is given and mention is made of the types of application, the products and processes involved. Examples for Malaysian agricultural products are used. Ringkasan. Data terakhir mengenai radiasi matahari di beberapa tempat yang berbeda-beda di Malaysia memberikan indikasi bahwa Malaysia memiliki sumber enersi yang berlebihan yang dapat digunakan untuk pengolahan…