Judul: Struktur Sekretori Beberapa Tanaman Obat Antikanker
Abstrak: Cancer is disease caused by the growth of abnormal tissue cells. Indonesia has a lot of medicinal plants which is believed to have anticancer effects are used to treat cancer. Some anticancer plants commonly used are Physalis angulata, Kaempferia rotunda rhizomes, Gynura pseudochina, Typhonium flagelliforme, Isotoma longiflora, and Annona muricata. Anticancer medicinal plants containing secondary metabolites such as compounds of the alkaloid, flavonoids, and these terpenoids. Secretory structures in anticancer medicinal plants have not been widely studied. Thus, research on the structure of the anticancer medicinal plant secretory is necessary to be carried out. The objective of this research was to explore information about secretory structure from plant organ which is used to anticancer medicinal material. Observations of secretory structures were conducted by making microscopic preparations. The results showed that the leaves of A. muricata, I. longiflora, K. rotunda rhizomes, and T. flagelliforme had secretory structures in the form of idioblast cells. Idioblast cell of A. muricata leaves contained in the palisade, whereas the idioblast cells in the I. longiflora leaves contained in the sponges. The idioblast cells in T. flagelliforme were distributed in sponges and tuber parenchyme. The idioblast cells in K. rotunda rhizomes were distributed at the cortex and pith. The leaves and stems of P. angulata plants have secretory structures such as glandular trichomes consisting of head cells and stalk cells. The glandular trichomes were found on the epidermis. The leaves of G. pseudochina have secretory structures in the form of asteraceae type glandular trichomes in the epidermis of leaves and idioblast cells containing the oil cells in the sponges. All secretory structures were found randomly distributed.
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Judul: Analisis Struktur Anatomi, Struktur Sekretori, dan Uji Histokimia Tanaman Pegagan (Centella asiatica L. Urban)
Abstrak: Pegagan (Centella asiatica L Urban) merupakan tumbuhan herba yang banyak digunakan dalam mengobati berbagai penyakit, dan sebagai bahan makanan. Kandungan senyawa metabolit sekunder pada pegagan sudah banyak dipublikasikan, namun lokasi akumulasinya pada jaringan tumbuhan belum diketahui. Penelitian ini bertujuan menganalisis struktur anatomi, struktur sekretori, serta akumulasi senyawa metabolit sekunder yang terdapat di dalamnya. Organ tanaman yang diamati adalah daun, tangkai daun, dan stolon. Analisis struktur anatomi menunjukkan tipe stomata pada daun adalah anisositik dan parasitik, pada tangkai daun adalah anisositik, parasitik, dan tetrasitik, sedangkan pada stolon adalah parasitik. Daun pegagan memiliki mesofil yang terdiri dari jaringan palisade dan bunga karang. Tangkai daun dan stolon tersusun oleh epidermis, korteks yang dilengkapi dengan jaringan kolenkim, dan berkas pembuluh bertipe kolateral tertutup yang tersusun melingkar tanpa empulur pada tangkai daun serta dengan umpulur pada stolon. Struktur sekretori yang ditemukan pada tanaman pegagan berupa dua tipe trikoma uniseriat, dua tipe saluran sekretori, dan sel idioblas. Akumulasi senyawa metabolit sekunder ditemukan pada struktur sekretori, serta jaringan lainnya. Hasil uji histokimia tanaman pegagan menunjukkan lokasi akumulasi fenol, senyawa lipofilik, alkaloid, terpenoid, dan flavonoid. Fenol dijumpai pada semua jenis struktur sekretori, yakni trikoma uniseriat tipe 2, kedua tipe saluran sekretori, dan sel idioblas. Senyawa lipofilik dan alkaloid teridentifikasi pada semua jenis struktur sekretori dan jaringan lainnya, yakni kutikula dan floem. Terpenoid terakumulasi pada semua jenis struktur sekretori, kutikula, epidermis, dan floem. Flavonoid terdapat pada saluran sekretori, sel idioblas, dan floem.
Keyword: gotu kola, idioblast, secretory channels, uniseriate trichome

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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