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The Change of Fat, Protein, Starch Contens and Electric Conductivity within Gaharu (Aquillaria malaccensis) Seeds Syamsuwida, Dida; Aminah, Aam
JURNAL MANAJEMEN HUTAN TROPIKA Vol 13, No 2 (2007)
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.7226/jmht.13.2.

Abstract

One of the symptomps of seed ageing is broad changes of biochemical content within seeds which is causing the decrease of decrease viability, eventually. The aim of the study was to determine the change of Aquillaria malaccensis seeds biochemically during storage and desiccating. There were two trial in this study: 1) decreasing seed moisture content by desiccations for 6, 12, 18, 24, and 48 hours and 2) storing the seeds conventionally in two different condtions of storage (ambient room and air conditioner room). Since the moisture content of fresh seed on acceptance was low (15,9%) due to the delaying during transportation, reducing moisture content of the seed brought about the decrease of germination capacity down to zero. The content of protein, fat and starch of the seeds during desiccation and storage were mostly  changes which were indicating the deterioration of the seeds. The content of fat of fresh seeds was high (46,2%) and tended to remain high during desiccating. Meanwhile, the content of protein tended to increase and starch was decreased following desiccation. The content of fat and protein tended to increase and starch was decreased following desiccation. the content of fat and protein during storage weree reduced, while starch was increased for 8 weeks and then went down for the rest of storage. The electricconductivity within the seeds in both treatments (desiccation and storage) was increased which were indicating the leakage of membrane cells occured . Based on biochemical content changes, seed of Aquillaria malaccensiscould be categorized as recalcitrant type. However, to make the results more accurate it should be proved specifically by testing the physiological of seeds, simultaneously.Keywords : Aquillaria malaccensis, desiccations, fat, moisture content, protein  
Metode Perlakuan Pendahuluan untuk Penyimpanan Benih Melur pada Suhu Sangat Rendah (Pretreatment Method of Melur Seeds Storing at Extreme Low Temperature) Syamsuwida, Dida; Aminah, Aam
JURNAL MANAJEMEN HUTAN TROPIKA Vol 14, No 2 (2008)
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.538 KB) | DOI: 10.7226/jmht.14.2.

Abstract

Cryopreservation is a method of long term storage in which an extremely low temperature of nitrogen liquid (-196 oC) being used to preserve seeds of recalcitrant characteristics. The study was aimed to determine the standard protocol of vitrivication in melur (Podocarpus neriifolius) seeds storing in various cryoprotectans. The use of sucrose PVS2 and DMSO as a cryoprotectan were employed to protect the regularly-desiccated seeds during preserving in liquid nitrogen for 1 hour. Evaluation was made on the viability by germinating the seeds in green house. Randomized completely design of 3 factors was used in this study. The results revealed that seed moisture content was 53% after being desiccated using vaccuum-desicator for 24 hours and showed more than 85% of germination, in average. Vitrivicated seeds in DMSO for 2 hours performed 66.67% germination. Meanwhile, seeds in sucrose and PVS2 for 1 hour reached of 53.33% and 25.33% of germination, respectively. Preservation in liquid nitrogen for 1 hour did not succeed to keep any treated seeds as there was no germination found during viability testing.Keywords: cryiopreservation, vitrivication, melur, desiccation, recalcitrant
PENENTUAN KARAKTERISTIK FISIOLOGIS BENIH KRANJI ( BERDASARKAN NILAI KADAR AIR Pongamia pinnata) Aminah, Aam; Syamsuwida, Dida
Jurnal Penelitian Hutan Tanaman Vol 10, No 1 (2013): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (102.685 KB)

Abstract

ABSTRACTPongamia pinnata is one of sources for biodiesel. This study aims to determine physiological and biochemical parameters of seed for planting and biodiesel production. Seed properties were analyzed such as moisture content, germination percentage, biochemical content (protein, starch and electrical conductivity) as well as oil contents. Initial moisture content of seeds was done by means of heat treatment in oven for 24 hours 103OC. Reduction of moisture content of seeds for germination test was conducted by means of incubation for 0, 24, 48 and 72 hours at 35OC. The results revealed the highest germination (92%) was reached at the moisture content of 46.80 % after desiccating for 48 hours. The content of protein and starch were 14.84% and 15.01% respectively and electrical conductivity was 815 millimho. Moisture content for seedling cultivation was 46.8% and for biodiesel was 51.37% with rendemen of 11.47%. The content of fat tended to decrease during desiccation.ABSTRAKKranji (Pongamia pinnata) adalah salah satu jenis tanaman yang berperan dalam menyediakan dua sumber energi yaitu biomassa kayu untuk kayu bakar dan biji mengandung minyak nabati yang dapat dimanfaatkan sebagai sumber biodiesel. Penelitian ini bertujuan untuk mengetahui parameter fisiologis dan biokimia setelah terjadinya penurunan kadar air dalam rangka penyediaan bahan tanaman dan bahan baku biodiesel. Metode yang digunakan untuk pengujian kadar air benih awal adalah pengeringan dengan oven pada suhu 1030C ± 20C selama 24 jam. Perlakuan penurunan kadar air benih dilakukan dengan metode penyimpanan dalam inkubator untuk P1 = 0 jam (kontrol); P2 =24 jam; P3 = 48 jam dan P4 = 72 jam. Parameter yang diamati meliputi kadar air, daya kecambah, kandungan biokimia benih (protein, pati dan Daya Hantar Listrik/DHL) serta rendemen minyak. Hasil penelitian menunjukkan bahwa pengeringan yang tepat untuk bibit kranji adalah 48 jam. Perlakuan ini menghasilkan benih dengan kadar air 46,39%, protein 14,84%, pati 15,01% dan DHL 815 millimho dan daya kecambah 92%. Perubahan biokimia benih kranji selama penurunan kadar air memperlihatkan adanya peningkatan protein dan daya hantar listrik seiring dengan lamanya pengeringan serta penurunan kandungan lemak dan kandungan pati. Berdasarkan perubahan fisiologis dan biokimia yang terjadi, benih kranji memiliki kecenderungan bersifat rekalsitran. Kadar air benih untuk bibit tanaman adalah 48,6% sedangkan untuk produksi biodiesel 51,37% dengan rendemen 11,47%. Kandungan minyak terus menurun selama penurunan kadar air.
TEKNIK PENYIMPANAN SEMAI KAYU BAWANG ( Dysoxylum moliscimum ) MELALUI PEMBERIAN ZAT PENGHAMBAT TUMBUH DAN PENGATURAN NAUNGAN Syamsuwida, Dida; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 8, No 3 (2011): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

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Abstract

DAMPAK PERUBAHAN FISIOLOGI DAN BIOKIMIA BENIH EBONI ( Diospyros celebica Bakh.) SELAMA PENYIMPANAN Yuniarti, Naning; Syamsuwida, Dida; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 10, No 2 (2013): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

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Abstract

ABSTRACTThe research was objected to determine the impact on biochemical and physiological changes of eboni (Diospyros celebica Bakh.) seeds during storage. Completely randomized design was used in this trial with two treatments, i.e storage room condition and storage periods. The results showed that physiological changes of the seeds during storage decreased their germination percentage and seed moisture content. Biochemical changes as indicated by the increase of fat and protein contents, as well as reduction of carbohydrat content following the period of drying and storage were observed. Storing the seeds in an Air-Conditioned room could keep germination percentages at 61,94% with the moisture content at 46,69% for as long as 8 weeks. Based on physiological and biochemical responses, eboni seeds could be classified as recalcitrant type.ABSTRAKEboni  (Diospyros  celebica Bakh.)  merupakan  jenis  tanaman  yang potensial  untuk dikembangkan  padapembangunan hutan tanaman. Benih bermutu tinggi diperlukan dalam program pengembangan jenis ini dan penyimpanan benih tidak dapat dihindari berkaitan dengan penyediaan benih. Penyimpanan benih eboni ditujukan untuk mempertahankan viabilitas benih agar tetap tinggi. Tujuan penelitian adalah untuk mengetahui dampak perubahan kandungan biokimia dan fisiologis benih eboni selama penyimpanan. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap pola Faktorial dengan perlakuan faktor ruang simpan  dan  periode penyimpanan.  Hasil  penelitian  menunjukkan perubahan  fisiologis benih eboni  selama penyimpanan mengakibatkan adanya penurunan nilai daya berkecambah dan kadar air benih ; perubahan biokimia benih eboni selama penyimpanan menunjukkan adanya peningkatan kandungan lemak dan protein serta penurunan kandungan karbohidrat seiring dengan lamanya pengeringan dan penyimpanan ; penyimpanan benih eboni di ruang simpan AC dapat mempertahankan viabilitas benih selama 8 minggu, dengan daya berkecambahnya hingga 61,94% dengan kadar air 46,69 %. Berdasarkan reaksi fisiologis dan biokimia yang terjadi, maka benih eboni dapat dikatagorikan sebagai benih rekalsitran.
SIKLUS PERKEMBANGAN PEMBUNGAAN DAN PEMBUAHAN SERTA PEMBENTUKAN BUAH KEMENYAN (Styrax benzoin) DI AEK NAULI Syamsuwida, Dida; Aminah, Aam; Nurochman, Nurkim; Sumarni, E. Baeni; Ginting, Johan
Jurnal Penelitian Hutan Tanaman Vol 11, No 2 (2014): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.844 KB) | DOI: 10.20886/jpht.2014.11.2.89-98

Abstract

Jaminan ketersediaan benih secara terus menerus memerlukan informasi tentang fenologi pembungaan dan pembuahan. Informasi ini sangat bermanfaat untuk menduga waktu pemanenan yang tepat dan memperkirakan potensi produksi benih. Jumlah maksimum produksi benih yang dihasilkan dapat dideterminasi dari ratio bunga menjadi buah. Tujuan penelitian adalah mengetahui siklus reproduksi dan pembentukan buah jenis kemenyan (Styrax benzoin) di Aek Nauli. Pohon sampling dipilih sebanyak10 pohon dengan dua perlakuan yaitu pembungaan pada arah Timur dan Barat. Jumlah bunga dan buah per malai dihitung untuk mengukur ratio bunga menjadi buah (fruit set) tanaman kemenyan. Hasil pengamatan menunjukkan bahwa siklus reproduksi tanaman kemenyan di arboretum Aek Nauli pada periode tahun 2012–2013 berlangsung selama 8–9 bulan diawali dari terbentuknya tunas generatif pada bulan Juni–Juli, bunga mekar Agustus dan buah masak pada bulan Februari–Maret. Ratio buah/bunga (fruit set) kemenyan berkisar antara 10–13%. Pembungaan pada dahan bagian Barat dan Timur tidak menunjukkan perbedaan nyata. 
PENGARUH PENGUNGKAPAN CORPORATE SOCIAL RESPONSIBILITY TERHADAP EARNING RESPONSE COEFFICIENT ( Studi Pada Perusahaan-Perusahaan Sektor Jasa di BEI) Aminah, Aam; Mayangsari, Sekar
Media Riset Akuntansi, Auditing dan Informasi Vol 11, No 1 (2011): April
Publisher : Fakultas Ekonomi dan Bisnis

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Abstract

In their investment decision making process, investors need companies information to make any decision regarding their investment. Mostly, they only have the financial information. The using of the non financial information regarding social aspect which is popularly known as Corporate Social Responsibility (CSR) also can be used as additional information for the investment decision making.The purpose of the study is to examine the effect of the information of Corporate Social Responsibility disclosed in the companies annual reports on the Earning Response Coefficient (ERC). Analytical tool for the study is regression analysis OLS cross sectional with Ridge Regression model. The sample of the study consist of 38 annual reports 2008 and 2009 of the companies in telecomunications, banking and financial services and transportation business listed at the Jakarta Stock Exchange (BEI). The result of the study by using ridge regression show that there is no effect between CSR disclosures on ERC eventhough the study has already using BETA, PBV and Leverage variables. CSR disclosures didnt have any effect on ERC. Investors still have no confidence on any social information provided annualy by the companies for their investment decision making. Also CSR disclosures in services business still be assumed as less important compared to the disclosures in mining or manufactured business.Based on the result of the study, for the further study we suggest as follows: (1) the addition of sectors besides services business, adding more samples, and the extension of exposure period (2) Adding additional variables that can influence the ERC (3) Giving more weight on the disclosure detail level and its measurement must be follow any international development on CSR (such as Global Reporting Initiatives) that should be suited with Indonesian condition.Keywords : Corporate Social Responsibility (CSR) Disclosures, Earning Response Coefficient (ERC).
PERKEMBANGAN BUNGA DAN BUAH PIRDOT (Saurauia bracteosa DC.) DI ARBORETUM AEK NAULI Ali, Cica; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 14, No 2 (2017): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1743.228 KB) | DOI: 10.20886/jpht.2017.14.2.103-113

Abstract

ABSTRACTSaurauia bracteosa DC is a potential plant for tumor and cancer medicine, but information about the reproductive system is currently unknown. The purpose of this study was to determine the development phases of S. bracteosa flower and fruit. The study was conducted by observing structural characteristics of flower and development stages from flower until ripe fruit. Phenology of flower and fruit development were classified into five stages namely flower initiation, small bud stage, large bud stage, anthesis, and fruit development. Changes in color, shape, size, and time period of each stage in twenty inflorescences of four plants were observed. The period from flower initiation to fruit maturity of S. bracteosa took on average 145 days. Flower initiation took on average 16 days, small bud stage occurred in 38 days, large bud phase occurred in 16 days, anthesis stage took on average 5 days and fruit development would complete in 74 days. Keywords: Flowering development, fruiting development, Saurauia bracteosa DC ABSTRAKSaurauia bracteosa DC. memiliki potensi sebagai obat kanker dan tumor, namun informasi mengenai sistem reproduksinya hingga saat ini belum diketahui. Penelitian ini bertujuan untuk mengetahui tahap perkembangan bunga dan buah S. bracteosa. Penelitian dilakukan dengan metode observasi terhadap bunga dan buah S. bracteosa meliputi: karakteristik struktur bunga dan tahapan perkembangan bunga sampai buah masak. Perkembangan pembungaan dan pembuahan diklasifikasikan ke dalam lima fase yaitu fase inisiasi, fase kuncup kecil, fase kuncup besar, bunga mekar, dan fase perkembangan buah. Pengamatan dilakukan terhadap perubahan warna, bentuk, ukuran, dan periode waktu dari setiap tahap perkembangan bunga dan buah dari 20 pembungaan pada empat pohon sampel. Hasil penelitian menunjukkan bahwa rata-rata lama pembungaan dan pembuahan spesies S. bracteosa mulai awal inisiasi hingga buah masak adalah 145 hari. Durasi yang dibutuhkan untuk setiap fase adalah fase inisiasi 16 hari, fase kuncup kecil 38 hari, fase kuncup besar 16 hari, fase bunga mekar 5 hari, dan fase perkembangan buah dari bunga gugur hingga buah masak 74 hari. Kata kunci: Perkembangan bunga, perkembangan buah, Saurauia bracteosa DC
PENENTUAN KARAKTERISTIK FISIOLOGIS BENIH KRANJI (BERDASARKAN NILAI KADAR AIR Pongamia pinnata) Aminah, Aam; Syamsuwida, Dida
Jurnal Penelitian Hutan Tanaman Vol 10, No 1 (2013): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (102.685 KB) | DOI: 10.20886/jpht.2013.10.1.1-6

Abstract

Kranji (Pongamia pinnata) adalah salah satu jenis tanaman yang berperan dalam menyediakan dua sumber energi yaitu biomassa kayu untuk kayu bakar dan biji mengandung minyak nabati yang dapat dimanfaatkan sebagai sumber biodiesel. Penelitian ini bertujuan untuk mengetahui parameter fisiologis dan biokimia setelah terjadinya penurunan kadar air dalam rangka penyediaan bahan tanaman dan bahan baku biodiesel. Metode yang digunakan untuk pengujian kadar air benih awal adalah pengeringan dengan oven pada suhu 1030C ± 20C selama 24 jam. Perlakuan penurunan kadar air benih dilakukan dengan metode penyimpanan dalam inkubator untuk P1 = 0 jam (kontrol); P2 = 24 jam; P3 = 48 jam dan P4 = 72 jam. Parameter yang diamati meliputi kadar air, daya kecambah, kandungan biokimia benih (protein, pati dan Daya Hantar Listrik/DHL) serta rendemen minyak. Hasil penelitian menunjukkan bahwa pengeringan yang tepat untuk bibit kranji adalah 48 jam. Perlakuan ini menghasilkan benih dengan kadar air 46,39%, protein 14,84%, pati 15,01% dan DHL 815 millimho dan daya kecambah 92%. Perubahan biokimia benih kranji selama penurunan kadar air memperlihatkan adanya peningkatan protein dan daya hantar listrik seiring dengan lamanya pengeringan serta penurunan kandungan lemak dan kandungan pati. Berdasarkan perubahan fisiologis dan biokimia yang terjadi, benih kranji memiliki kecenderungan bersifat rekalsitran. Kadar air benih untuk bibit tanaman adalah 48,6% sedangkan untuk produksi biodiesel 51,37% dengan rendemen 11,47%. Kandungan minyak terus menurun selama penurunan kadar air.
PENGARUH PENURUNAN KADAR AIR TERHADAP PERUBAHAN FISIOLOGI DAN KAND UNGAN BIOKIMIA BENIH EBONI (Diospyros celebica Bakh.) Yuniarti, Naning; Syamsuwida, Dida; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 5, No 3 (2008): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (784.495 KB) | DOI: 10.20886/jpht.2008.5.3.191-198

Abstract

Eboni  (Diospyros celebica Bakh.) merupakan jenis tanaman yang potensial untuk dikembangkan pada pembangunan hutan tanaman. Secara alami benih eboni mengalami kemunduran dengan bertambahnya waktu.Tujuan penelitian adalah untuk mengetahui perubahan fisiologi dan biokimia yang terjadi pada benih eboni selama pengeringan (penurunan kadar air). Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap dengan 3 kali ulangan. Hasil penelitian menunjukkan bahwa: (1) Perubahan fisiologi benih eboni selama penurunan kadar air mengakibatkan adanya penurunan daya berkecambah dan kadar air benih, (2) Perubahan biokimia benih eboni selama penurunan kadar air menunjukkan adanya peningkatan kandungan lemak dan protein serta penurunan kandungan karbohidrat seiring dengan lamanya pengeringan, dan (3) Berdasarkan reaksi fisiologi dan biokimia yang terjadi, yaitu dari kadar air awal, dan kandungan biokimia maka benih eboni dapat dikategorikan sebagai benih rekalsitran.