The Impact of Fiber from Buckwheat Hulls Waste on the Pasting, Rheological and Textural Properties of Normal and Waxy Potato Starch Gels

The aim of this study was to investigate the impact of fiber from buckwheat hull waste (BH) on the pasting, rheological, and textural properties of 4% and 5% (w/w) pastes and gels based on the potato starches with different amylose/amylopectin contents. The starch and starch/fiber mixtures were characterized by pasting and flow measurements as well as by viscoelastic and textural analysis. The pasting properties showed a greater BH effect (0.2%) on the gelatinization of PS than WPS. The starch gels and starch fiber mixtures showed biopolymer gel behavior. In the WPS/BH pastes, a smaller increase in hardness was noted compared to PS/BH.

Coffee (Coffea sp.) hull waste fermentation with the addition of banana sucker microorganism activator for physical quality of Ruminantia feed

This research aims to determine the physical quality of coffee hull waste fermentation using a banana sucker microorganism activator. It aims to determine the best composition of banana sucker local microorganism (MOL) activator. Method used in this research was complete randomized design consisting of 6 levels and 4 replications which are, F1 = 10 ml MOL / 1 kg coffee hull, F2 = 15 ml MOL / 1 kg coffee hull, F3 = 20 ml MOL / 1 kg coffee hull, F4 = 25 ml MOL / 1 kg coffee hull, F5 = 30 ml MOL / 1 kg coffee hull, F6 = 35 ml MOL / 1 kg coffee hull. Silage fermentation physical characteristics observed are acidity/PH, aroma/smell, color, and texture. These characteristics were examined in this research to determine the effect of treatment. The data obtained were analyzed by analysis of variance and further HSD test. The results of the research that the addition of banana sucker microorganism activator to the fermentation of coffee hull waste (coffea sp) on physical quality for ruminant feed showed no significant effect (P> 0.05) on pH, color, and texture and had a very significant effect (P <0, 01) on the aroma. It can be concluded that the addition of banana sucker microorganism activator in the fermentation of coffee hull gave the best aroma results in the F4 treatment (3.29) and gave equally good results on physical properties such as pH, color, and texture of the fermented coffee hull.

Biosorption of Nickel (II) from Aqueous Solutions onto Pistachio Hull Waste as a Low-Cost Biosorbent

There are many different industrial wastewater containing heavy metals that contribute to environmental pollution and raw agricultural waste is an effective adsorbent for the removal of heavy metals. The adsorption behavior of pistachio hull powder (PHP) as a low-cost adsorbent, with respect to nickel (II) ions, has been studied in order to consider its application to the purification of metal finishing wastewater. In this work, adsorption of nickel on pistachio hull has been studied by batch techniques. The adsorption depends on the process time, the pH of the solution, initial concentration of metals and the adsorbent concentration in the suspension. The kinetics of adsorption were relatively fast, reaching equilibrium for less than 60 minutes. Kinetic and isotherm modeling studies demonstrated that the experimental data best fit a pseudo-second order and Freundlich model, respectively. The maximum Langmuir adsorption capacity was 14 mg/g. The optimum pH required for maximum adsorption was found to be 4-6. The initial concentration of the adsorbate and the concentration of pistachio hull strongly affect the process. No influence of particle size was evidenced. A degree of adsorption higher than 75% can be achieved for nickel (II) ions.

PENGARUH PEMBERIAN PAKAN ITIK DENGAN LIMBAH UDANG DAN LIMBAH KULIT KACANG KEDELAI YANG DIBERI PROBIOTIK TERHADAP PRODUKSI DAN WARNA KUNING TELUR

The objective of this study was to utilize the superiority of agricultural waste in form of soybean hull and shrimp wastes and their combination on egg layer duck. This feed contains starbio probiotic functions for fiber digestion (soybean hull waste) and chitin (from shrimp waste). The expectation was that there would be duck ration which is able to increase egg production and quality and brighter reddish egg-yolk which is attractive and full of nutritions. The research was conducted in three stages. Stage I is Nutrient Digestional Value Test on the formula of soybean hull and shrimp wastes mixture on Duck Feed Contained Starbio." Stage II : experiment on "Mixture Formulation of soybean hull and shrimp wastes mixture on Duck Feed Contained Starbio Probiotik for Increasing The Performance of Egg Layer Duck" and III experiment on "The Production of Reddish Duck Egg-Yolk With Feed Contained soybean hull and Shrimp Wastes Mixture". The experiment concluded that : I) the provision of soybean hull andshrimp had significant effects on digestability of feed dried materials, but conversely had no effects on protein digestability and crude fiber, as well as on egg produktion and quality.There was no interaction between two materials in the treatment. 2) Shrimp waste tended to have effects on daily egg production of egg layer duck; 3) Yellow color of the eggs couldn't change to be reddish yet, since xanthophyl content had already lost in over-dried and alreadyexpired shrimp wastes.Key Words : shrimp waste, soybean hull, probiotic, egg-yolk color