Pineapple wastes

Effect of Na-alginate and bead diameter on lactic acid production from pineapple waste using immobilized Lactobacillus delbrueckii ATCC 9646... 

Since, the pineapple canning industry is one of the many food industries producing large quantities of solid and liquid wastes and due to the stringent environmental regulations regarding to waste disposal a special interest has developed in using the pineapple waste. 

Lactic acid bacteria were immobilized in Ca-alginate beads prepared from different concentration of Na-alginate (1.0%, 2.0%, 4.0%, 6.0% and 8.0% w/v) and their fermentation efficiencies were investigated in liquid pineapple waste containing 31.3 gL of glucose... 

Citric acid occurs naturally in a number of plant species and may be extracted from lemon juice, which contains 5-8% citric acid, or pineapple waste. Anhydrous citric acid may also be produced industrially by mycological fermentation of crude sugar solutions such as molasses, using strains of Aspergillus niger. Citric acid is purified by recrystallization the anhydrous form is obtained from a hot concentrated aqueous solution and the monohydrate from a cold concentrated aqueous solution. 

Bardiya, N., Somayaji, D., and Khanna, S. (1996). Biomethanation of banana peel and pineapple waste. Bioresour. Technol. 58, 73-76. 

Tran, C. T. and Mitchell, D. A. (1995). Pineapple waste—A novel substrate for citric acid production by solid-state fermentation. Biotechnol. Lett. 17(10), 1107-1110. 

Citric acid Aspergillus niger Pineapple waste [55]... 

Ahmed OH, Husni MH, Anuar AR, Hanafi MM (2002) Effect of residue management practices on yield and economic viability of Malaysian pineapple production. J Sustain Agric 20 83-94 Ahmed OH, Husni MH, Anuar AR, Hanafi MM (2004) Towards sustainable use of potassium in pineapple waste. Sci World J 4 1007-1013... 

Early CA fermentations were carried out in surface cultures. Now, this method is stdl used in many small- and medium-scale industries, as it requires less effort, simple equipment, and lower energy cost. In the surface fermentation process, A. niger grows as a thick, floating mycelial layer over the surface of the medium. Surface fermentations are used to find potential uses for raw and cheap materials such as piunpkin and cane molas-and orange and pineapple wastes. 

Tran C, Sly L, Mitchell D. Selection of a strain of Aspergillus for the production of citric acid from pineapple waste in solid-state fermentation. World J Microbiol Biotechnol 1998 14 399-404. 

Pineapple waste is a by-product of the pineapple processing industry and consists basically of the residual pulp, peels, and skin. It is not considered attractive as animal feed, since it contains high fiber content and soluble carbohydrates, as well as low protein content. This residue, along with many other agricultural wastes, can cause serious environmental problems, since it accumulates in agro-industrial yards without having any significant industrial or commercial value. 

Some strategies can enhance recovery of phenolic compounds from pineapple industrial wastes. One such process reported by Correia (2004a) describes the use of the fungus Rhizopus oligospoms to produce phenolic compounds from pineapple waste (residual pulp, peels, and skin) mixed with soybean flour. The authors found a two-fold increase in total phenolic content in a 1 1 pineappleisoybean flour mixture 12 days after incubation with the fungus. The functionality of the pineapple phenolic-emiched bioprocessed extracts for amylase inhibition and Helicobacter pylori inhibition were further investigated (Cor-... 

Correia, R., McCue, P., Magalh s, M., Macedo, G., and Shetty, K. 2004a. Production of phenohc antioxidants by the soUd-state bioconversion of pineapple waste mixed with soy flour using Rhizopus oligospoTus. Process Biochemistry 39(12), 2167-2172. 

Pineapple waste, sugar cane bagasse Rice bran and soy bean meal Pearl barley Sugar cane molasses Soybean and sweet potato... 

Cassava bagasse Pineapple waste Cassava bagasse Alfalfa fiber Soya fiber Pearl barley... 

Commercial bromelain is currently prepared by centrifugation, ultrafiltration and freeze-drying of cooled pineapple juice, which produces a yellowish powder. Stem bromelain has been generally prepared from the juice of pineapple wastes (mainly stems) by precipitation with organic solvents (e.g., acetone and methanol) or by ultrafiltration. ... 

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