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All Journal Agrotrop : Journal on Agriculture Science International Journal of Biosciences and Biotechnology E-Journal of Tourism E-Journal Of Cultural Studies Bumi Lestari Ecotrophic, Journal of Environmental Science E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Jurnal Keteknikan Pertanian Jurnal Master Pariwisata (JUMPA) Journal of Degraded and Mining Lands Management Jurnal Sumberdaya Alam dan Lingkungan Jurnal Teknologi Pertanian Jurnal Sains Teknologi dan Lingkungan (JSTL) INTERNATIONAL JOURNAL OF ENVIRONMENT AND GEOSCIENCES Jurnal Penelitian Budaya Jurnal Kepariwisataan: Destinasi, Hospitalitas dan Perjalanan
M. Sudiana Mahendra
Graduate School Of Environmental Sciences, Udayana University, PB Sudirman Street, Post Graduate Building, Denpasar, Bali 80232, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences

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ANALISIS KADAR LOGAM BERAT AIR SUNGAI SEKONYER DI KABUPATEN KOTAWARINGIN BARAT KALIMANTAN TENGAH. Maria T. Indarwati; M.S. Mahendra; I W. Arthana
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 2 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Sekonyer river as west border of Tanjung Puting National Park, is the main flora and fauna preservation areasespecially for orangutan conservation. Part of Sekonyer river upper course around year 1990 to 2002, there was anillegal gold mining (IGM) activity, and in 2002 this IGM was forbidden to be operated because of the use of mercuryfor extracting the gold. In former IGM location, up to this research has been done, the location is still used for silikapuya (sand) mining that is extracted from the sands by using water from the river, as a result, the waste water wasinundated in the mining area and flows into Sekonyer river. The objectives of this research are first of all, to identifythe heavy metal degree of the water, such as mercury, copper, cadmium, zinc, lead, arsenic, and chrome. The secondone is to identify the source of pollution, and the last one is to identify the potential heavy metal that pollute the water.Composite method was used in collecting the water samples, i.e. in Sekonyer river and the mining location.Water and puya samples were analyzed in Analytical Laboratory of University of Udayana, and then its pollutionindexes were counted, and the quality of the water was fixed based on Third Degree of quality standardized criteria,Government Rule Number 82 Year 2001.The results of the research show that along the Sekonyer river, from upper to lower courses of the river sideswith the following conditions: from the lower course of mining area it was found light pollution with pollution index of 2,51, after puya mine it was found heavy pollution with pollution index of 17,84, up to mid of Rimba Orangutan Eco-Lodge with Sekonyer river estuary there were found light pollution with pollution indexes of 3,71; 4,59; and 2,88respectively, but in the junction of Sekonyer river and Ulin river it was found moderate pollution with pollution indexof 5,13, and in Sekonyer river estuary it was found heavy pollution with pollution index of 16,35.It was also found heavy pollution with pollution index of 16,26 in the inundated water in the puya mininglocation . It was also happened to puya in the mining location that was contaminated by heavy metal of mercury in0,1168 ppm and zinc in 0,195 ppm degrees, whilst in Kumai river, upper side of Kumai quay it was found heavypollution with pollution index of 17,42.From the results of the analysis, it can be concluded that the heavy metals was derived from mining area(Aspai), from the sea and also from upper course of Kumai river. The potential metals as the pollutant were cadmium,zinc, lead, and mercury.
STUDY OF POLLUTANT DISTRIBUTION IN BENOA BAY USING NUMERICAL SIMULATION AND SATELLITE DATA Komang Ardana; M S Mahendra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 3 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Euthrofication that caused by nitrate and phosphate contamination and also sedimentation process is the mainproblem that took place in Benoa Bay Territorial water. The distribution of phosphate pollutant in Benoa bay territorialwater was modeled by numeric of Princeton Ocean model (POM). The input of this pollutant model were a tidal currentpattern, M2 tidal current residue, biological factor, physic and chemistry, that influenced pollutant concentration.Meanwhile, the sedimentation concentration was mapped with ALOS AVNIR-2 sensor image satellite and this image wasanalysed with statistic method (Linear Regression).The result of phosphate modeling concentration was 0.1 mg/1 to 0.0022 mg/1, where the concentration wascategorized very hazardous to the territorial water environment. Because the phosphate concentration in a pollutantresources was beyond the standard level of environmental quality, that was 0.015 mg/1 for fishery cultivation and alsotourism activity (Bali Governor Regulation No.8th 2007). While, the direction of the distribution was affected by currentpattern of movement, that was when the ebb level of high water moving into the bay and when the ebb to high tidemoving out of the bay.The result of statistic approaches with ALOS of AVNIR-2 censor can be used for mapping sedimentationdistribution advantages in Benoa Bay. The values were: R2 Band 1 is 0.3839, Band 2 is 0.6123 and Band 3 is 0.5468. Inthis methodology, the correlation was not significant, due to, the quantity of in-situ data was small and the time researchwas not at the same time with satellite data.
PEMETAAN KUALITAS AIR TANAH DI DESA DAUH PURI KAJA KOTA DENPASAR M. FAIRUZ ABADI; M.S. MAHENDRA; I.W BUDIARSA SUYASA
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 6 No 2 (2011)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Groundwater pollution has been an issue of concern for environmentalists. This study aims to detect the possibilities of municipal ground water quality deteriorations, to know how does the classification status of groundwater contamination, and also to map distribution of the status of groundwater contamination in Desa Dauh Puri Kaja Denpasar City. A method to assess municipal water quality is using Water Quality Index method, with the cluster classification. Mapping groundwater contamination is done using Arc View 3.3 (Geografic Information System) The parameters used are TSS, BOD, COD, NH3-N, Cd Cr (VI), Cl, N, Sulfate, H2S and total coliform. This research proves that groundwater quality status on a cluster two is in the category of heavy impurity, whereas in cluster two sources of pollutant in the material organic derived from water run off and seepage from rivers. Status of water quality in cluster three are on the same level with the water quality status in cluster one, but based on the characteristics of pollutants was found that the factor of pollutant in the cluster three caused sewage contamination of the active substance in detergent. in cluster one source pollutants is derived from organic waste (domestic waste). Suggestions and recommendations in this study aimed to the peoples concession of land in the Dauh Puri Kaja thats potentially affect for ground water quality should be equipped with sewage treatment plants (on-site sanitation), and to the government and related institutions in order to mobilize the potential of empowering community to create an environment with better quality, cleaner, more convenient to protect ground water.
STATUS KUALITAS AIR DI KAWASAN PARIWISATA NUSA PENIDA Nyoman Sudipa; Made Sudiana Mahendra; Wayan Sandi Adnyana; Ida Bagus Pujaastawa
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 14 No 2 (2020)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2020.v14.i02.p08

Abstract

Environmental water quality is very influential on environmental sustainability and tourism in the Nusa Penida Tourism Area. Changes in environmental water quality are influenced by human activities in utilizing environmental resources. As a developing tourism area, Nusa Penida has a source of environmental water from springs, groundwater and has marine waters with biodiversity that become underwater paradise. The method used by analyzing water quality uses a standardized quality approach based on Bali Governor's Regulation No. 16 of 2016 concerning Environmental Quality Standards and Environmental Damage Quality Criteria and to find out the water pollution index using the approach of the Decree of the Minister of Environment No. 51 of 2004, then compared with environmental water quality using environmental water quality tests that have been carried out in the Study of Analysis Regarding the Environmental Impact of the Nusa Penida Tourism Area in 1998.Tests for the quality of sea water, well water and spring water in 2019 each showed relatively better results compared to the results of quality tests for sea water, well water and spring water in 1998. Influential parameters The index of sea water pollution, well water and spring water in Nusa Penida are turbidity parameters, free ammonia (NH3-N) dissolved residue (TDS) and total coliform, respectively.Keywords: environment; quality; water; tourism; Nusa Penida.
DAMPAK AKTIVITAS MASYARAKAT TERHADAP TINGKAT PENCEMARAN AIR LAUT DI PANTAI KUTA KABUPATEN BADUNG SERTA UPAYA PELESTARIAN LINGKUNGAN Nita Elyazar; M.S. Mahendra; I Nyoman Wardi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 2 No 1
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Sea and coastal areas of Badung Regency, especially Kuta Political District is growing rapidly as atourism area. Increasing community activities created pollution and affected conservation areas, includeKuta Beach.This research aimed to know the positive and negative impacts of community activities of hotels,restaurants, settlement/housing, tradings and services, industries and fisherman. Besides, identificationseawater quality of Kuta Beach on their physical, chemical and microbiological parameters during rainyseasons as well as to find out effort on environment conservation done by government and local communitiesin Kuta Political District.Samples were determined using purposive sampling method collected from three locations at KutaBeach, which then analysed insite and at analytical laboratory. Seawater quality on their physical, chemicaland microbiological parameters ratio was compared with based on standard of seawater quality for marinerecreation according to Decree of the State’s Minister Environment Act Number 51 years 2004. The index ofthe population was then calculated to gain the population index. Samples of community activities werecollected using questioner, interview and observation and then analysed by qualitative description method.The result showed that activities at the sea and coastal areas of Kuta Political District had an impactsuch as increase population and job availability, provision of income to Badung Regency and TraditionVillage, environment aesthetics, perception of community, culture and region perform, waste andenvironment sanitation, land use degradation of coastal border, mobility of motorized vehicle and seawaterintrusion. The water quality of Kuta Beach during rainy seasons in February year 2006 exceeded thethreshold level or quality standard such as rubbish, NH3, NO2, NO3, PO4, Cu, Cd, Pb, E. coli and coliform.DO exceeded the minimum limits of seawater quality standard. Whereas, parameters which did not yetexceed the maximum limits namely: temperature, colour, smell, turbidity, TDS, salinity, pH, BOD, COD, fatand oil, fenol, Hg and Fe. The result showed that score of calculation pollution index of Kuta Beachseawater in three research zone, were between 6,46 and 6,77. The effort on environment conservation inKuta Political District had been conducted by local community and government, but long term effort inenvironment conservation is still needed better strategy and actions in an integrated and sustainablemanners.
Pengaruh Berbagai Jenis Kemasan Terhadap Umur Simpan dan Perubahan Fisiko-Kimia pada Buah Stroberi (Fragaria sp.) ERNIA DESRIATI HUTAJULU; MADE SUDIANA MAHENDRA; I NYOMAN GEDE ASTAWA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.2, April 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The effect of using various packaging treatments on extend the shelf life of strawberry fruit and their physico-chemical changes Strawberry is one among horticultural commodities that has a significant potential being developed commercially in Bali. Strawberry fruit commonly has a relatively sweet taste and a strikingly bright red color. Strawberry fruit is easily damaged and has a short shelf life, so it is necessary to inhibit the damage, among others by the use of various packaging treatments. This study aims to extend the shelf life of strawberry fruit and the effect of using various packaging treatments on their physico-chemical changes. The experimental design used was completely randomized design with one packing type factor consisting of 3 treatment levels, ie without packaging, use of mica package, and use of styrofoam package.The results showed that strawberry fruits treated with mica and styrofoam pacgages had a longer shelf life than strawberry fruit stored without any packaging (control). The storage period of strawberries both treated with mica and styrofoam packeges were last up to the 4th day. The use of mica package showed the best results with the lowest shrinkage value, lowest softness, low respiration rate and high organoleptic value. Eventhough strawberry fruit packed with styrofoam package showed a high vitamin C content, but the strawberry fruit packed with mica package has a better visual appearance with good fruit quality and mostly accepted by the panelist.
Pengaruh Perlakuan Konsentrasi Kalsium Klorida (Cacl2) dan Suhu Penyimpanan terhadap Fisikokimia Buah Salak Bali (Salacca zalacca) RIAN AZZUMAR; MADE SUDIANA MAHENDRA; ANAK AGUNG GEDE SUGIARTA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.4, Oktober 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Effect of Calcium Chloride Concentration (CaCl2) and Storage Temperature on Physico-Chemical of Salacca zalacca Fruit This study aims to know the effect of calcium chloride (CaCl2) and determine the best concentration of calcium chloride and storage temperature on physico-chemical salak fruit. The research method used was split plot design which consisted of two treatments that are concentration of calcium chloride (CaCl2) (sub plot) with four levels; 0%, 9%, 12% and 15% storage temperature (main plot) with two levels; 28±2oC and 15± 2oC. The observation included weight loss, hardness, respiration rate, total dissolved solids, total acid content, vitamin C content, pH test, organoleptic test and shelf life. The result showed that storage of salak fruit with application of calcium chloride had the lowest respiration rate at temperature 28±2oC and 15±2oC. The treatment had the lowest respiration rate was concentration of calcium chloride 12% with the lowest respiration rate ( 2,54 ml/kg.hour of O2 and 2,45 ml/kg.hour of CO2). The concentration of chloride at 12% and storage at temperature 15±2oC was the best treatment to maintain physico-chemical characteristics with parameters wight loss, hardness, total dissolved solids, total acids content, pH test, and shelf life. Organoleptic test showed that a combination of concentration of calcium chloride 12% with storage temperature of 15±2°C have a level of acceptance that are favored by panelists. Calcium chloride of 12% extended the shelf life of salak fruit for 7 days at 28±2oC and 11 days at a temperature 15±2oC, respectivly.
Pengaruh Aplikasi Kalium Permanganat (KMnO4) terhadap Umur Simpan Buah Pisang Kepok (Musa paradisiaca formatypical ABB Group) UYUN FITRI MALINDA; MADE SUDIANA MAHENDRA; I MADE SUKEWIJAYA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Effect of Application of Potassium Permanganate (KMnO4) on the Shelf Life of Kepok Banana Fruit (Musa paradisiaca formatypical ABB Group) Banana is one of the fruit that is widely cultivated in Indonesia. The potential of large banana production is quite prospective to be developed as a local food source. This research aims to determine the effect of application of potassium permanganate on the shelf life of kepok banana fruit. Research conducted in Agronomy and Horticultural Laboratories and Ecophysiology Laboratory of the Faculty of Agriculture, Udayana University. The research was conducted in June-October 2019. The research was designed by randomized complete block design (RCBD) single factor consisting of 6 treatments i.e. K0 = control (without oxidizing materials), K1 = 10 g oxidizing materials, K2 = 30 g oxidizing materials, K3 = 50 g oxidizing materials, K4 = 70 g oxidizing materials, K5 = 90 g oxidizing materials. The observation is done in a destructive manner (content of vitamin C, total dissolved solids, and hardness) and non destructive (shelf life, weight shrinkage, respiration, color). The results showed that the longest shelf life of the fruit (27 days of storage) was on the K1 (10 g oxidizing materials) and K2 (30 g oxidizing materials) treatment. The smallest weight in the treatment of K1 (10 g Oxidizing materials) and K2 (30 g Oxidizing materials) on the 21st day reaches 0,006% and 0,007%. K2 treatment indicates the lowest respiration rate rate at 9 after treatment (AT) is 4,90 mg CO2/kg/hr. KMnO4 treatment does not give real influence on the hardness, content of vitamin C, PTT except on 21 AT, and the skin color of the fruit except on 27 AT.
Pengaruh Ukuran Wadah Kemasan Mika Terhadap Kualitas dan Umur Simpan Buah Stroberi (Fragaria sp.) YONATHAN CHRISTIAN SIMATUPANG; MADE SUDIANA MAHENDRA; ANAK AGUNG GEDE SUGIARTA
Agrotrop : Journal on Agriculture Science Vol 11 No 1 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i01.p06

Abstract

Influence of Mica Packaging Container Sizes on Quality and ShelfLife of Strawberry (Fragaria sp.). This study aimed to determine the effect of plastic mica container size with a total of 15 pieces of packaging and determined the best treatment for the shelf life of strawberries (Fragaria sp). This study useds a complete randomized design methodology (CRD) with one treatment, namely the type of plastic mica container size with various types of packaging types as follows: type 1 (K1), type 2 (K2), type 3 (K3) and number 15 fruit packs. The observed variables were weight loss, hardness level, shelf life, organoleptic test, respiration rate and vitamin C. The size of the packaging containers affected the physico-chemical changes in the strawberries. The treatment influenced the physico-chemical changes in the strawberries, such as the rate of respiration and vitamin C levels. The best packaging size was the smallest size (K1 ) K2 and K3 packaging container sizes. This is indicated by the lowest weight loss variable, with the value of 0.20%, the lowest value of respiration rate (20.61 CO2/ kg/hour), the highest vitamin C content (72.89 mg/100g), while in the organoleptic test, the smallest container size resulted in the highest score in fruit colour, container size has a score highest in the observation of fruit color, fruit appearance and fruit aroma. Observation of the shelf life of strawberries showed that the container size of K1 (the smallest) had an average shelf life better than K2 and K3. K1 container size produced a shelf life average of 4 days while K2 container size produce a shelf life average of 3,4 days. The shortest shelf life average was recorded in the K3 container size with a value of 3,2 days. It is concluded that the shelf life of strawberries in a packaging container at a temperature of 28-30ºC can be as long as 4 days.
Effect of Impact and Fruit Harvesting Indexes on the Quality of Mangosteen Fruit I.B.P Gunadnya; I.M. Supartha Utama; M. Sudiana Mahendra
Jurnal Keteknikan Pertanian Vol. 15 No. 1 (2001): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.015.1.%p

Abstract

Mangosteen fruit is one of tropical exotic fruits that has potency as exported commodity but its potency is limited by its poor quality. Both the fruit shell and its aril are very susceptible to any improver handling during and after harvesting andsince then its quality decreases rapidly. Experiments were set up to study the effect of impact, by dropping the fruit from certain heights, and fruit harvesting indexes on its quality. Visual observations showed that dropping the fruit from 0.5 m above the floor was sufficient to damage fruit shell and aril. The inner surface of fruit shell that subjected to the impact became brown and the aril became translucent and tasteless. Quantitatively, fruit shell became hard after two-day- storage and the dropping of the fruit and fruit harvesting indexes significantly affected total soluble solid of the aril. The fruit with harvesting index 5 significantly contained the less total soluble solid when it was dropped from the height of 1 m and stored for 6 days.
Co-Authors A. A. A. WULANDIRA SAWITRI DJELANTIK A. A. Sri Mahyuni A.A. GEDE PUTRA Abd. Rahman As-syakur Adinda Marsha Anugrah AGUS MULIADI PUTRA, AGUS MULIADI ANAK AGUNG GEDE SUGIARTA Anak Agung Putu Agung Suryawan Wiranatha Anugrah, Adinda Marsha Ary Poppo Dewa Ngurah Suprapta Dharma, IGB Sila ERNIA DESRIATI HUTAJULU Gertrudis Vebriyanti Kahar Helga Margareta Hunter I Dewa Gede Agung Pandawana I G. R. M. TEMAJA I Gede Mahardika I Gusti Agung Ayu Rai Asmiwyati I Gusti Ayu Kunti Sri Panca Dewi I Gusti Bagus Sila Dharma I K PUTRA I Kadek Adiana Putra I KETUT ARYANA I Ketut Sundra I Komang Tri Sumandiarta I Made Adhika I MADE ADNYANA I Made Sara Wijana I MADE SUDARMA I Made Sukewijaya I MADE SUPARTHA UTAMA I N. Suastaka I Nengah Sudipa I NYOMAN GEDE ASTAWA I NYOMAN RAI I Nyoman Sucipta I Nyoman Sudipa I Nyoman Sunarta I Nyoman Wardi I W BUDIARSA SUYASA I W. Arthana I Wayan Adiputra Gunawan I Wayan Arthana I Wayan Diara I Wayan Redi Aryanta I Wayan Sandi Adnyana I Wayan Suarna I WAYAN WINDIA I.B. Sudana I.P.G. Ardhana I.W. Budiarsa IDA AYU MAYUN Ida Bagus Gde Pujaastawa Ida Bagus Komang Mahardika Ida Bagus Pujaastawa Ida Bagus Putu Gunadnya IN SUWIRTA Indra Bhaskara, Gde IPG Ardhana Ivany Gresya Saragih K Agung Sudewa Kakuji Ogawara Komang Ardana Komang Arthawa Lila Luh Komang Sulasmini Luh Made Suriwati M Ariasih M. FAIRUZ ABADI, M. FAIRUZ Made Antara Made Antara Made Armadi Made Partiana Made Sudarma Made Sudarma Mahyuni, A. A. Sri Maria T. Indarwati murdiman murdiman N Widya N. O. Tridjaja N.ANOM PURWA WINAYA N.L.P Mahendra Dewi NI LUH WIDYASARI Ni Made Setiari Ni Wayan Ana Pradnya Dewi Nita Elyazar Nixon Rammang, Nixon Nyoman Sugiartha Nyoman Sutresni Olivia Grace Brigitta Florencia Putri, Iswahyuni Hartanto Putu Aryastana RIAN AZZUMAR Rindang Dwiyani SUCIKA ARMIANI, SUCIKA Syamsul Alam Paturusi Takahiro Osawa Takahiro Osawa Takahiro Osawa Takahiro Osawa Tasuku Tanaka Tasuku Tanaka Tasuku Tanaka Utari Sterla Tibuludji UYUN FITRI MALINDA W Budiarsa S Wahyu Ning Tyas Wayan Redi Aryanta Wayan Sandi Adnyana Yohanis Umbu Kaleka, Yohanis Umbu YONATHAN CHRISTIAN SIMATUPANG