Effect of the Catalyst Metal Content on PEMFC Durability

Eichhornia crassipes is well-known as water hyacinth. Water hyacinth grows rapidly in the nutrient-rich water and high light intensity places. The uncontrollable growth of water hyacinth has caused many negative impacts to the environment. For instance, interrupted water transport and decreased population of aquatic lives. The capacity of utilising water hyacinth is slower than water hyacinth growth and water hyacinth is still considered as a threat to theecosystem. This work was focused on the study of the pharmacological activity and heavy metal content of water hyacinth in Lake Cipondoh, Tangerang. Fresh water hyacinth was pre-treated through oven-drying and milling process. After that, each part of the plant was macerated by using multiple extraction method with 96% ethanol/water and three variations of sample-to-solvent ratios (1:30, 1:50, and 1:75 w/v). The result of the experiment showed thatwater hyacinth leaves produced an extract with lowest IC 50 (55.76 ± 6.73 ppm) compared toother parts. The most optimum solvent used to achieve this result was 96% ethanol/water (1:1 v/v). In order to obtain the lowest antioxidant activity, the sample to solvent ratio used was 1:50 and the heavy metal in the extract was very low. With this result, it was concluded that there is a promising opportunity to apply the water hyacinth growing in Lake Cipondoh, Tangerang as herbal medicine ingredient. Through this utilization, the overall number of water hyacinth in Indonesia can be reduced or at the least be controlled, so that the environmental problem caused by this plant can be minimized.

Download Full-text

Bacteriobenthos and Heavy Metal Content in Benthic Sediment of the Sasyk Reservoir

Hydrobiological Journal ◽

10.1615/hydrobj.v35.i1.30 ◽

1999 ◽

Vol 35 (1) ◽

pp. 20-31 ◽

Cited By ~ 1

Author(s):

G. N. Oleynik ◽

V. N. Belokon' ◽

T. N. Kabakova

Keyword(s):

Heavy Metal ◽

Metal Content ◽

Heavy Metal Content

Download Full-text

PEMANFAATAN FERMENTASI REBUNG UNTUK BAHAN SUPLEMEN PANGAN DAN TEPUNG SERAT

Jurnal Riset Industri Hasil Hutan ◽

10.24111/jrihh.v3i1.1187 ◽

2011 ◽

Vol 3 (1) ◽

pp. 37 ◽

Cited By ~ 1

Author(s):

Andri Taruna Rachmadi

Keyword(s):

Metal Content ◽

Local Food ◽

Raw Materials ◽

Starch Content ◽

Quality Standard ◽

Food Supplements ◽

Crude Fiber ◽

Bamboo Shoot ◽

Spontaneous Fermentation ◽

Bamboo Shoots

One of the solutions to fulfill the food sustainability is diversification of local food. One of the local food that potential to be used and processed is bamboo shoots. In South Kalimantan, the potential of bamboo as a producer of bamboo shoot plants with an estimated total area of 2158 hectares with a potential of 6 million stems. To increase the value and health of bamboo shoots can be made with fermentation. Fermentation is done by two methods, enzimatic fermentation and spontaneous fermentation. The results of the highest crude fiber obtained in spontaneous fermentation of bamboo shoots Haur 44.46% while the highest starch content present in fermented bamboo shoots Paring stater of 13.91%. Metal content, everything is still fulfill the quality standard. Flour bamboo shoots can be used as food supplements or raw materials of fiber flour.Keywords: bamboo shoots, fermentation, fiber flour

Download Full-text