Judul: Kultivasi Empat Isolat Jamur Tiram (Pleurotus) pada Substrat Sengon (Fa/cataria moluccana) dan Jabon (Anthocephalus cadamba) serta Analisis Komposisi Kimia Jamur.
Abstrak: One of alternative media for oyster mushroom (Pleurotus sp.) cultivation is using wood sawdust. This research was aimed to analize the potency of oyster mushroom cultivation using sawdust media from two species which are Sengon (Falcataria moluccana) and Jabon (Anthocephalus cadamba). The result showed that total wet mass of mushroom in the sengon baglog species code P. ostreatus var. Floridae TR was 47.7 g. Biology efficiency (BE) on the Sengon baglog coded P. ostreatus var. Floridae TR was higher than Jabon baglog coded EB with the same mushroom species. In this research, the weight of baglog media was 250 g with three repetitions. Jabon baglog has a potency as cultivation media for oyster mushroom so it could be utilized to subtitute Sengon baglog. Oyster mushroom is nutritions food containing protein more than 20% dry basis and functional carbohydrate (β-glucan more than 20%). The content of vitamin B3 in oyster mushroom was 282.28 mg/100g, while for vitamin D was not detected. The highest β-glucan content was in the oyster mushroom coded P. ostreatus var. Floridae TR 32.35 g/100g dried mushroom. β-Glucan in Pleurotus sp has been commonly used as a food suplement for prebiotic, anti-tumor, anti-oxidant, antiinflammation and imunomodulation.
Keyword: Cultivation, oyster mushroom, jabon substrate, sengon substrate, β- glukan

Judul: Pengaruh Serbuk Sengon, Daun Jati, dan Tandan Kosong Kelapa Sawit (TKKS) terhadap Kultivasi Jamur Tiram (Pleurotus spp.)
Abstrak: Jamur tiram (Pleurotus spp.) merupakan salah satu jenis jamur kayu yang banyak dikonsumsi masyarakat karena memiliki kandungan gizi yang tinggi. Limbah serbuk sengon, kelapa sawit dan serasah daun jati menjadi alternatif sebagai media tanam dalam kultivasi jamur tiram. Penelitian ini bertujuan mempelajari pertumbuhan dan produksi jamur tiram (Pleurotus spp.) pada media yang mengandung serbuk sengon, daun jati, dan Tandan Kosong Kelapa Sawit (TKKS). Metode yang digunakan adalah Rancangan Acak Lengkap Faktorial (RALF). Faktor pertama terdiri atas jamur tiram cokelat dan merah, faktor kedua terdiri atas 6 komposisi media. Hasil penelitian menunjukkan formula 2 (serbuk sengon 1860 g + daun jati 300 g) memberikan pengaruh terbaik pada fase vegetatif dengan rata-rata pertumbuhan miselium 0,75 cm/hari. Fase generatif paling baik dalam 2 kali panen diperoleh formula 4 (serbuk sengon dengan TKKS 1:2) yaitu 9 hari. Total bobot basah tertinggi diperoleh formula 4 yaitu 103,39 g dengan nilai efisiensi biologis 53,28%. Hama dan penyakit yang ditemukan adalah tungau, Collembola, dan Trichoderma sp. Kata kunci: budi daya, limbah, media, pertumbuhan, produktivitas ABSTRACT RIZAL LUL GODI. Effect of Sengon Powder, Teak Leaves, and Empty Bunches of Oil Palm (EBOP) on Cultivation Oyster Mushroom (Pleurotus spp.). Supervised by ELIS NINA HERLIYANA and LUFTHI RUSNIARSYAH. Oyster mushroom (Pleurotus spp.) is a type of wood mushroom that is widely consumed by the public because it has a high nutritional content. Waste of sengon powder, oil palm and teak leaf litter is an alternative as a growing medium in the cultivation of oyster mushrooms. This study aims to study the growth and production of oyster mushrooms (Pleurotus spp.) on media containing sengon powder, teak leaves, and Empty Bunches of Oil Palm (EBOP). The method used is the Factorial Complete Randomized Design (FCRD). The first factor consists of brown and red oyster mushrooms, the second factor consists of 6 media compositions. The results showed that formula 2 media (sengon powder 1860 g + teak leaves 300 g) had the best influence with an average growth of mycelium of 0,75 cm/day. The generative phase that requires the shortest harvest period in formula 4 media (sengon powder with EOPB 1:2) is 9 days. The highest total wet weight of the fungus was obtained in formula 4 media, which was 103,39 g with a biological efficiency value of 53,28%. Pests and diseases found are mites, Collembola, and Trichoderma sp. Keywords: cultivation, growth, media, productivity, waste
Keyword: ultivation, growth, media, productivity, waste

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular