A comparative study of paper produced from zea mays - Philippine ...

#38
Utilization of cyanide-containing fruit seed extracts as
potential pesticides
Jennifer N Ong, Raul Romea, Bejamin Velasco, Jose Mnauel Atienza, Cynthia
Verzosa
ABSTRACT
The presence of cyanide in various fruit seed extracts was qualitatively
determined using picrate paper strips. Phosphorus and sulfate were detected
using lead acetate and silver nitrate paper strips.
The cyanide ions were separated from the other ions present in the
seeds through distillation. The distillate was subsequently titrated with silver
nitrate to quantify the cyanide in the various fruit seed extracts. The results
of the analysis are as follows: apple 2% santol, 0.66%; papaya, 1.39; and
mango, 0.98%.
Mice fed with various amounts of cyanide from the four samples
exhibited a hundred percent fatality rate (100%). This was accompanied by
symptoms characteristics of cyanide-poisoning-dilated pupils, respiratory
arrest, convulsions, unconsciousness, and involuntary defecation. However,
differences in the time (in seconds) it took for death to occur were observed.
These variations on the effectivity time followed a general trend: the greater
the concentration of cyanide, the faster death occurs.
Analysis of various showed that there were significant differences on
the time of effectivity of the samples used. The order of effectivity in
increasing proportion is as follows: mango, papaya, santol, and apple seeds.
Histopathological tests done on the mice using the similar picrate paper strips
indicated the cyanide as the main cause of death of the mice. It was then
concluded that cyanide can be utilized as an effective pesticide.
#39
Utilization of tridax procumbens as feed protein
supplement for chicks
Roderick M Planta, Ferdinand B Bajo, Jason Mar S Hernando, Edward G Frias,
Brandy M Taguiang
ABSTRACT
Week – old white leghorn chicks were fed with commercial broiler
mash mixed with dried tridax procumbens (wild daisy0 at levels of 20%, 30%,
40%, 50% for 48 days. Pure commercial broiler mash was used as the
control. Results of this study indicated that among the experimental groups
the chicks fed with the 20% diet had the highest gain in weight and were
significantly heavier and required less amount of feed. However the
difference in weight gains between the chicks fed with the 20% wild daisy
diet and the control were not statistically significant which means that the
20% tridax diet is as good as the control. It therefore saves on the cost of