Clarification and filtration characteristics of some South African raw juice samples were examined in relation to flocculant usage. The influence of flocculant degree of hydrolysis on the efficiency of these processes is described. The zeta potential of the juice particles was found to modify the choice of flocculant for optimum settling and filtration.

Low concentration of raw flower juice of Calotropis porcera (Asclepiadecae) and seed dust of Nerium oleander (Apocynacae) significantly delayed the egg to adult development of two-spotted spider mite, Tetranychus urticae Koch, for three successive generations under laboratory trial. The flower juice of C. porcera was found more effective than the seed dust of N. oleander in delaying the develop...

Expansins refer to a family of closely related non-enzymatic proteins found in the plant cell wall that are involved in the cell wall loosening. In addition, expansins appear to be involved in different physiological and environmental responses in plants such as leaf and stem initiation and growth, stomata opening and closing, reproduction, ripening and stress tolerance. Sugarcane (Saccharum sp...

in last decades, oil spill pollution has become an important issue of concern due to its serious environmental impacts; therefore, necessary actions should be taken to prevent or reduce these types of pollution and their environmental consequences. natural organic sorbents are emerging as proper choices for oil spill cleanup due to their availability, eco-friendliness, and low cost. in this stu...

Raw sugar colour is an increasing sugar quality concern, not because of a decline in the quality of South African very high pol raws but rather due to rapid improvements in the raw house colours in the rest of the world. Technically, raw sugar with lower colour has direct implications for the refiner’s effort and cost of processing that sugar. Enormous benefits could be derived if colourants co...

Sugarcane (Saccharum officinarum L.) an important sugar crop, shows high sensitivity to salinity at various growth stages. This study was conducted to determine the comparative response of a salt-tolerant (CP-4333) and a salt-sensitive (CP-71-3002) sugarcane clone to the toxic or osmotic effects of sodium chloride at two growth stages. Clones indicated significant differences in terms of reduct...

Composted sewage sludge (CSS) contains large amounts of organic matter and nutrients can be used as an fertilizer to improve growth, yield, quality sugarcane. However, there is a lack information regarding the impact CSS application on sugarcane seedling performance in nursery environments. A field study was conducted using randomized complete block design evaluate development, nutritional stat...

Among the family of sugarcane spirits, those made from juice are diverse and often produced in a traditional way. They must be distinguished other which more widely derivatives, such as molasses. These alcoholic beverages contribute significantly to socio-economic development many countries. However, despite ancestral know-how, there is lack contemporary data required characterize some spirits ...

SPITTLEBUGS may cause a reduction in sugarcane quality, problems with juice clarification and lower the VHP sugar quality by increasing phenol compounds and colour. A randomised complete-block design experiment with three replicates was conducted. The first factor tested was spittlebug injury to cane stalks with a control (0%) and different levels of infested stalks (15, 30 and 60%). The second...