KENANGAN TERINDAH

UTILIZATION OF VEGETABLE HYDROCOLLOID COMPOUNDS AS EDIBLE COATING MATERIAL TO EXTEND THE SHELF LIFE OF BANANAS MULI (Musa acuminata LINN.)

Desi Nurjannah University of Muhammadiyah Parepare . deshynoerjannah.agro13@gmail.com Muh. Akhsan Akib University of Muhammadiyah Parepare . akhsanbagus@yahoo.co.id +6281343885978 Nur Ilmi University of Muhammadiyah Parepare ilmi_261008@yahoo.co.id Abstract The preserve quality, freshness and extending shelf life of fruit could be done by storing the fruits in the refrigerated room, pressurized room or by modifying the atmosphere of the room. However, this type of storage cost is quite expensive, therefore needed another solution that is fruit coating using edible coating solution made from vegetable hydrocolloids. The aims of this study were to determine the best materials type among the three types of vegetable hydrocoloid materials, namely extract Aloe vera leaves, extract Ceiba pentandra leaves and extract  Abelmoschus manihot leaves that are able to preserve the shelf life of M.acuminata fruit. This research use was a complete randomized design with four treatments, namely;  without edible coating, edible coating of extract Aloe vera leaves, edible coating of extract Ceiba pentandra leaves, and edible coating of extract  Abelmoschus manihot leaves, with three replications. The result showed that the lowest shrinkage percentage was found in edible coating of extract Aloe vera leaves with an average value of 3.43% and the highest was found in treatment without edible coating of 4.37%. At the end of observation the highest sugar content was obtained in edible coating of extract Aloe vera leaves of 20 oBrix while the lowest was in treatment without edible coating that was 16oBrix. In organoleptic test, panelists prefered edible coating of extract Aloe vera leaves with an value range of 4 or 5 equivalented with neutral or likes, and did not like of edible coating of wxtract Abelmoschus manihot leaves  with an value range of 3 or 4 equivalented with slightly dislike  or neutral. Based on the conducted observational, the edible coating of extract Aloe vera leaves was able to preserve the shelf life of M.acuminata fruit up to five days after harvesting. Keywords : Edible coating; hydrocolloid ; shrinkage; sugar content; shelf life.

Lokasi Penelitian Lapang

Pelaksanaan Penelitian Lapang

 Fase Perkecambahan

 Gejala Keracunan Logam Nikel

  Gejala Keracunan Logam Nikel

 Fase Pembungaan

Fase Pengisian Buah 

Growth Analysis of  Jack Bean Inoculated with Acaulospora sp in Nickel-Contaminated Soil

Muhammad Akhsan Akib, Kahar Mustari, Tutik Kuswinanti, Syatrianti A. Syaiful.

Abstract— Growth analysis is a method to determine the response of plant phenotype to the environmental factors affecting the plant growth. The aim of this research was to analyze the growth of jack bean (Canavalia ensiformis) inoculated with Acaulospora sp in nickel-contaminated soil. The study was conducted in the Nursery area of Vale Indonesia Corporate, Sorowako, with three treatments of Acaulosporasp isolated from different environments, namely indigenous Acaulosporasp, exotic Acaulosporasp and without Acaulospora sp. Results showed that jack bean inoculated with indigenous Acaulospora sp had value of average leaf area, leaf area index, net assimilation rate and relative growth rate are higher than those jack bean inoculated with exotic Acaulospora sp and without Acaulospora sp. The higher tolerance to environmental conditions with extreme nickel metal concentrations indicates potential of indigenous mycorrhiza that can be used as biological filter agent to promote plant growth.

Index Terms— Mycorrhiza, heavy metal, biological agent, photosynthesis.

The Effect of Acaulospora sp on Canavalia ensiformis L Roots Growth at

Nickel Post-mine Land

Muhammad Akhsan Akib¹, Kahar Mustari², Tutik Kuswinanti^3,*,

Syatrianty Andi Syaiful².

^1.  Graduate school, Hasanuddin University, Makassar, South Sulawesi, 90245, Indonesia, and Department of Agrotechnology Faculty of Agriculture, Animal Husbandry and Fishery, Muhammadiyah University of Parepare, South Sulawesi, 91131, Indonesia.

^2.  Department of Agronomy Faculty of Agriculture, Hasanuddin University, Makassar, South Sulawesi, 90245, Indonesia.

^3.  Department of Plant Pests and Diseases Faculty of Agriculture, Hasanuddin University, Makassar, South Sulawesi, 90245, Indonesia.

^*   Corresponding author, phone: +62-8134256241, Fax: +62-411585162, postal address:  Department of  Plant Pests and Diseases Faculty of Agriculture, Hasanuddin University, Jl. Perintis Kemerdekaan, KM. 10,  Makassar, South Sulawesi, 90245, Indonesia, e-mail: koeswinanti@yahoo.com

Abstract

Plant root growth was greatly influenced by the chemical properties of the soil; therefore excessive heavy metals content in the soil will obstruct the growth of root. One alternative method to overcome this problem in nickel contaminated land is through application of indigenous microbial as biological agents. The aim of this research is to study the effect of Acaulospora sp as biological agents against the growth of Canavalia ensiformis root at nickel post-mining land in Sorowako, East Luwu district, South Sulawesi province, Indonesia. The research was carried out in nursery of PT. Vale Indonesia, from December 2016 until May 2017. Randomized block design (RBD) was selected to apply treatments application of native Acaulospora sp, exotic Acaulospora sp and without Acaulospora sp as the control. Isolation of native Acaulospora sp was carried out in the laboratory of Microbiology Research and Development Hall of Environment and Forestry of Makassar, South Sulawesi. The results showed that the application of native Acaulospora sp to Canavalia ensiformis in nickel post-mine land was able to increase the number of lateral roots from 20.07 up 28.83%; root length from 11.26 to 31.76%; volume of root 20.51%; dry weight root from 5.73 to 16.77% and root-shoot ratio from 3.44 to 30.18%. The result also showed that the native Acaulospora sp give effect on acceleration process of adaptation and increase the growth of Canavalia ensiformis roots as candidate of phytoaccumulator plants in the land with high nickel concentration are latest information from this research. Further identification of native strains Acaulospora sp with high tolerance to nickel will expand the horizons of research related to bioremediation process needed in the land post-mines as land post-mine nickel in Sorowako.

Keywords: Bioremediation, heavy metal, lateral root, mycorrhiza, phytoaccumulator, phytohormone.