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PEMANFAATAN LIMBAH GARAM (BITTERN) UNTUK PEMBUATAN MAGNESIUM KLORIDA (MgCl2) Gilmawan, Giman; Mahmiah, Mahmiah
Jurnal Riset Kelautan Tropis (Journal of Tropical Marine Research) (J-Tropimar) Vol 1, No 2: November 2019
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v1i2.31

Pembuatan garam NaCl dari air laut dengan metode penambahan ion sejenis menghasilkan garam dengan kemurnian tinggi, dan mempunyai hasil samping berupa air tawar dan bittern. Bittern dapat dimanfaatkan untuk berbagai kepentingan, baik dalam bidang industri maupun kesehatan, salah satunya adalah sebagai sumber mineral magnesium. Magnesium yang diisolasi dari bahan dasar bittern dengan penambahan natrium hidroksida menghasilkan magnesium hidroksida, kemudian dirubah menjadi magnesium klorida dengan menambahkan asam klorida. Tujuan penelitian ini adalah mengisolasi mineral magnesium dari bahan dasar bittern. Hasil yang diperoleh berupa kristal MgCl2 yang berwarna putih bersifat higroskopis dengan kadar 65,5%.

Dampak Virus Corona (Covid-19) Terhadap Sektor Kelautan dan Perikanan : A Literature Review Sari, Mery Nova; Yuliasara, Fransiska; Mahmiah, Mahmiah
Jurnal Riset Kelautan Tropis (Journal of Tropical Marine Research) (J-Tropimar) Vol 2, No 2: November 2020
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.41

Pandemi Virus Corona (Covid-19) mengguncangÂ umat manusia di seluruh dunia termasuk Indonesia pada awal tahun 2020. Merebaknya wabah virus corona dan ditetapkannya peraturan tentang PSBB (Pembatasan Sosial Berskala Besar) membuat menurunnya aktivitas masyarakat di luar rumah, baik itu pekerjaan, pendidikan bahhkan transportasi. Menurunnya aktivitas tersebut jika berlangsung lama tentunya akan berdampak pada penurunan pendapatan harian masyarakat terutama nelayan lokal dan pembudidaya ikan. Tidak hanya itu, beberapa gudang penyimpanan ikan (cold storage) terjadi penumpukan bahan baku ikan atau over stock karena tidak dapat di suplai ke luar daerah sebagaimana biasanya. Tujuan penulisan artikel ilmiah ini adalah untuk mengidentifikasi dampak Covid-19 terhadap sektor kelautan dan perikanan tangkap. Hasil studi literatur menunjukkan dampak Covid-19 terhadap sektor kelautan dan perikanan yaitu menurunnya harga ikan di beberapa wilayah hingga mencapai penurunan 50% dikarenakan turunnya permintaan seperti beberapa perusahaan eksportir ikan tutup, banyak hotel dan restoran tutup yang merupakan pembeli utama ikan dan makanan laut.

POTENSI ANTIOKSIDAN FRAKSI ETIL ASETAT KULIT BATANG BAKAU HITAM ( Rhizophora mucronata(Lamk.)) DARI PANTAI TIMUR SURABAYA Mahmiah, Mahmiah; Sudjarwo, Giftania Wardani; Andriyani, Febby
Jurnal Wiyata Penelitian Sains dan Kesehatan Vol 8, No 1 (2021)
Publisher : LP2M IIK (Lembaga Penelitian dan Pengabdian Masyarakat Institut Ilmu Kesehatan) Bhakti Wiy

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Latar belakang: Â Wilayah laut Indonesia yang luas dengan garis pantai yang panjang menyimpan potensi keanekaragaman hayati yang ada disekitar laut terutama potensi hutan mangrove. Mangrove merupakan tumbuhan halofilik yang memiliki karakteristik mampu menangani perubahan salinitas garam yang tinggi dan hipoksia pada air laut. Selama ini antioksidan yang berasal dari alam digunakan dari bahan yang ada di daratan dan pemanfaatan dari laut masih kurang. Hal ini yang mendorong untuk mengembangkan penelitian terhadap salah satu tumbuhan mangrove Rhizophora mucronata yang hidup di wilayah pesisir Pantai Timur Surabaya terhadap potensinya sebagai antioksidan. Tujuan: menentukan aktivitas antioksidan fraksi etil astetat kulit batang mangrove Rhizophora mucronata. Metode: ekstraksi dengan maserasi, fraksinasi dan uji aktivitas antioksidannya dengan TLC autograph dan dengan menggunakan metode DPPH (2,2-diphenyl- 1-picrylhydrazyl). Font huruf yang digunakan adalah Times New Roman ukuran 10, tegak (Bahasa Indonesia). Hasil: aktivitas antioksidan secara kualitatif dengan TLC autografi terdapat noda berwarna kuning menandakan positif antioksidan dengan nilai IC50fraksi etil asetat kulit batang R. mucronata sebesar 577,145 ppm. Simpulan dan saran: fraksi etil asetat kulit batang mangrove Rhizophora mucronata aktif sebagai antioksidan. Penelitian dapat dilanjutkan pada tahapan isolasi dan identifikasi senyawa aktif yang berpotensi sebagai antioksidan.

Aktivitas Antibakteri Ekstrak Metanol Kulit Batang Rhizophora mucronata Poiret terhadap Salmonella thypi, Lignières 1900 (Enterobacteriaceae : Gammaproteobacteria) Mahmiah Mahmiah; Serdian Pinaris Rama; Pramudita Riwanti
Jurnal Kelautan Tropis Vol 23, No 2 (2020): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v23i2.5577

Typhoid fever is an acute infectious disease of the small intestine caused by Salmonella typhi or Salmonella paratyphi A, B and C. Antibiotics commonly used for Salmonella infections are fluoroquinolones and tetracyclines. However, Salmonella has been resistant to these antibiotics. The many occurrences of antibiotic resistance encourage researchers to find solutions. Rhizophora mucronata is a mangrove from the family Rhizophoraceae. Phytochemically, Rhizophora mucronata is rich in many kinds of compounds such as tannins, alkaloids, flavanoids, terpenoids and saponins which important in suppressing pathogenic microorganisms. This study aims to determine the antibacterial activity of methanol extract of Rhizophora mucronata bark against the growth of Salmonella typhi bacteria looked at the clear zone around the well. This research is an experimental laboratory study using the well diffusion method. Rhizophora mucronata bark samples were extracted by maceration method. The results is the inhibition zone diameter methanol extract of Rhizophora mucronata bark with concentrations of 20%, 40%, 60% and 80% (b / v) classified as moderate (9.22 mm) to strong (13.78 mm) , the greater the concentration, the greater the diameter of the inhibition zone. Demam tifoid adalah penyakit infeksi akut usus halus yang disebabkan oleh bakteri Salmonella typhi atau Salmonella paratyphi A, B dan C. Antibiotik yang umum digunakan dalam penatalaksanaan infeksi bakteri yang disebabkan oleh bakteri Salmonella adalah fluoroquinolones dan tetrasiklin. Akan tetapi, Salmonella telah mengalami resisten terhadap antibiotik tersebut. Rhizophora mucronata merupakan mangrove dari famili Rhizophoraceae. Secara fitokimia, Rhizophora mucronata kaya dengan beberapa macam senyawa seperti tannin, alkaloid, flavanoid, terpenoid dan saponin yang berperan penting dalam menekan mikroorganisme patogen. Penelitian ini bertujuan untuk menentukan aktivitas antibakteri ekstrak metanol kulit batang Rhizophora mucronata terhadap pertumbuhan bakteri Salmonella typhi dengan melihat adanya zona bening disekitar sumuran. Penelitian ini merupakan penelitian eksperimental laboratories dengan menggunakan metode difusi sumuran. Sampel kulit batang Rhizophora mucronata dilakukan ekstraksi dengan metode maserasi. Hasil penelitian menunjukkan bahwa diameter zona hambat yang dihasilkan oleh ekstrak metanol kulit batang Rhizophora mucronata dengan konsentrasi 20 %, 40 %, 60 % dan 80 % (b/v) tergolong sedang (9,22 mm) hingga kuat (13,78 mm), semakin besar kosentrasi maka semakin besar juga diameter zona hambatnya.

PHYTOCHEMICAL AND ANTIOXIDANT ACTIVITY of MANGROVE PLANT Soneratia sp. Mahmiah Mahmiah; Rina Andayani
UNEJ e-Proceeding Proceeding of 1st International Conference on Medicine and Health Sciences (ICMHS)
Publisher : UPT Penerbitan Universitas Jember

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At the moment, plants use as medicine are mostlyland plants, while plants derived from water such asmangroves have not received much attentions.Some of the mangrove plants that can be used asmedicine are Acanthus ilicifolius, Avicennia alba,Avicennia marina, Avicennia offinalis, Bruguieracylindrical, Bruguiera exaristata, Bruguieragymnorrhiza, Ceriops tagal, Hisbiscus tiliaceus,Ipomoea pes-capre, Lumnitzera racemosa, Nypafructicans, Pluchea indica Rhizophora apiculata,Soneratia sp., dan Sonneratia alba. The plants wereutilized as antiasma, antidiuretic, antidiabetic, itchrelieve, etc. Purnobasuki, 2004).One of the mangroves that are often found on theEast Coast of Surabaya, East Java is Soneratia sp ..which is classed as true mangrove flora.Ethnobotanically, the wood and stem are used astraditional medicine as pain reliever. Based onresearch conducted by Mahmiah (2012)studyingphytochemical aspect of Avicennia marina from eastcoast region of Surabaya,it was known that the stemand leaves of the plant contained phenoliccompounds.Taking into account the existence of the waves andextreme weather conditions in the East Coast regionof Surabaya, it was hypothesized that the secondarymetabolite compounds produced by the plantswould be different. Based on that hypothesis it wasnecessary to do a research on Soneratia sp. plantlocated on the East Coast of Surabaya with the aimof exploring the content of secondary metabolitesfrom the stem of the plant.Methods that were used to accomplish that aimwere (1) preliminary test; (2) phytochemicalscreening; (3) GC-MS analysis and (4) antioxidanttest

ANTIOXIDANT ACTIVITY OF METHANOL EXTRACTS FROM THE STEM BARK OF MANGROVE PLANT Rhizophora mucronata Mahmiah Mahmiah; Giman Giman; Nanik Siti Aminah; Mulyadi Tanjung
UNEJ e-Proceeding Proceeding of 1st International Conference on Medicine and Health Sciences (ICMHS)
Publisher : UPT Penerbitan Universitas Jember

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Numbers of diseases such as stroke, diabetes, gout,and even cancer are caused by the reaction of freeradicals (oxidants) found in the body. Those diseasescurrently have not yet controlled. Deleteriouslifestyle, lack of exercise, or genetics can be thetrigger to this oxidant. Based on Chemotaxonomic,drugs that have been used to inhibit the oxidationprocess or termination stage of free radicals containthe active ingredient in the form of secondarymetabolites of alkaloids, phenolics, terpenoids andsteroids. For example, phenolic compounds such asflavonoids, xanthones, antioxidants and polyphenolsis a good agent because it has a structure with a highdegree of oxidation (Suares, et al, 2010).Researches related to the exploration of antioxidantactive ingredient has been more focused onsecondary metabolites found in terrestrial plants.The development of natural compounds potential ofmarine plant material such as mangrove are still notreceived much attention. Spalding et al. in 2001explained that mangroves plant in Indonesia is thehighest in the world, both in terms of quantity area(± 42 550 km2) as well as the number of species (±45 species). This basic natural resource of Indonesiamangrove is certainly valuable promisingopportunities to be expanded as a biological drug.Mangroves plant that commonly used as medicinediscovered from various species i.e: Acanthusilicifolius, Avicennia alba, Avicennia marina,Avicennia offinalis, Bruguiera cylindrical, Bruguieraexaristata, Bruguiera gymnorrhiza, Ceriops tagal,Hisbiscus tiliaceus, Ipomoea pes-capre, Lumnitzeraracemosa, Nypa fructicans, Pluchea indicaRhizophora apiculata, Rhizophora mucronata andSonneratia alba. Those plants are usually utilized asantiasma, antidiuretic, antidiabetic, reliever itching,and others. (Purnobasuki, 2004).The potential of mangroves as a drug is veryimportant to be developed considering the need fordrugs is increasing deals with the growing ofpopulation and many kinds of diseases such ascancer, hypertension, tumor diseases and diseasescaused by chemical or biological waste pollutionfrom viruses and bacteria. People are more likely tochoose drugs that are natural because relatively takefew side effects or even none at all.Several studies of mangrove plants from genusRhizophora that have antioxidant bioactivity areshown in the crude butanol extract of mangrove R.apiculata with IC50 33.34 pg / mL (Gao, 2012). Themethanol extract of R. mangle’s stem were alsodocumented to have antioxidant activity (Palacio, etal, 2014).One of mangroves found in Surabaya East Coastal(Pamurbaya), East Java, Indonesia is the mangroveRhizophora mucronata. This mangrove species isindigenous mangroves that ethno-botanicallypopular used as a pain reliever and dyes naturalwood. Secondary metabolites contained in theleaves, bark, stems, roots, and fruit are different inquantity. The content of secondary metabolites inplant commonly used as a medicine is from generalpart of the bark. Therefore, on the basis ofchemotaxonomic and ethno-botany of mangroves R.mucronata, this study aims to explore the bioactivityof antioxidant from the stem bark of R. mucronata.

PEMANFAATAN LIMBAH GARAM (BITTERN) UNTUK PEMBUATAN MAGNESIUM KLORIDA (MgCl2) Giman; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 1 No 2 (2019): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v1i2.31

Pembuatan garam NaCl dari air laut dengan metode penambahan ion sejenis menghasilkan garam dengan kemurnian tinggi, dan mempunyai hasil samping berupa air tawar dan bittern. Bittern dapat dimanfaatkan untuk berbagai kepentingan, baik dalam bidang industri maupun kesehatan, salah satunya adalah sebagai sumber mineral magnesium. Magnesium yang diisolasi dari bahan dasar bittern dengan penambahan natrium hidroksida menghasilkan magnesium hidroksida, kemudian dirubah menjadi magnesium klorida dengan menambahkan asam klorida. Tujuan penelitian ini adalah mengisolasi mineral magnesium dari bahan dasar bittern. Hasil yang diperoleh berupa kristal MgCl2 yang berwarna putih bersifat higroskopis dengan kadar 65,5%.

Dampak Virus Corona (Covid-19) Terhadap Sektor Kelautan dan Perikanan : A Literature Review Mery Nova Sari; Fransiska Yuliasara; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.41

The Corona Virus Pandemic (Covid-19) shook mankind around the world including Indonesia in early 2020. The coronavirus outbreak and the issuance of regulations on PSBB (Large-Scale Social Restrictions) make changes in community activities outside the home, whether it's job, education and even transportation. The decline in activity if it lasts a long time will certainly have an impact on the decline in people’s daily income, especially local fishermen and fish farmers. Not only that, some fish storage sheds (cold storage) occurs accumulation of fish or over stock because it can not be supplied outside the area as usual. This article is intended to discuss the impact of Covid-19 on the marine and capture fisheries sector. The results of the literature study show the impact of Covid-19 on the marine and fisheries sector, namely the decline in fish prices in some regions by up to 50% due to declining demand such as some fish export companies closed, many hotels and restaurants closed which are the main buyers of fish and seafood.

PENCEMARAN MINYAK DI PERAIRAN UTARA PULAU BAWEAN Sarah Nur Qowiyah; Mahmiah; Rudi Siap Bintoro
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 2 (2021): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i2.40

Marine pollution results in a decrease in the quality and quantity of coastal and marine resources. Most of the people in tambak sub-district have a livelihood as fishermen and work in the field of fish processing industry and seafood trade and the location of the waters are often passed by industrial vessels. This resulted in increased ship activity in the waters of Labuhan Beach, Tambak District, Tanjungori Village. As the activity increases it causes marine pollution. One of the sources of pollution produced is oil spills from former fuel boats or ships that cross the area of the water. This method can provide information about the condition of the waters according to their designation. The purpose of this study is to know the water quality based on the parameters of temperature, pH, salinity and brightness and know how much oil content in the waters of Labuhan Beach, Bawean Island. Sea water sampling was conducted at 4 stations, then the results were compared with sea water quality standards for biota based on KEPMEN LH No.51 Year 2004. The results showed that the oil content ranged from 0.0016%–0.0377%. As for the pH parameter, salinity and brightness in accordance with the quality standard, for the temperature parameter exceeds the standard value of quality. Based on this study, pollution index calculations show that the waters of Labuhan Beach, Bawean Island are in the category of lightly polluted.

ANALISIS BAKTERI SIMBION MANGROVE AVICENNIA MARINA SEBAGAI ANTIFOULING Alifia Rizky Novitasari; Nor Sa'adah; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 3 No 2 (2021): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v3i2.43

The accumulation of biofouling on a substrate causes material loss and huge economics in the maintenance of aquaculture systems, ship hulls, seawater pipelines, coastal power plants, and other marine infrastructure. Prevention of the attachment of biofouling organisms using antifouling paints that have been developed and used for a long time. Antifouling paint contains chemical compounds (biocides). The most sensitive organisms to antifouling paint are gastropods and bivalve that cause endocrine disorders, larval disorders and shell malformations. This study aims to obtain antifouling bacteria through the isolation process of bacteria obtained from the bark Avicennia marina mangrove. The method was beginning with isolation of bacteria bark of Avicennia marina mangrove, identification of bacteria, and antifouling activity test. The results obtained from isolation of bacteria, there are 9 bacteria endophytic symbionts of the inner bark and 9 epiphytic bacteria of the outer bark. The inhibition zone test of the endophytic bacteria in the bark showed that there was no antifouling activity.

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