除非采取更好的措施来解决海洋食品加工行业产生的巨大废物对环境和社会的影响,否则“公地悲剧”是不可避免的。不必再强调水产养殖作为捕捞渔业的完美替代品的巨大贡献,这已被证明是不可持续的。尽管如此,产生的大量生物废物可以转化为有用的产品,如甲壳素和壳聚糖,具有深远的应用。几丁质和壳聚糖一直从许多来源处理遵循传统的化学顺序去矿化(DM),脱蛋白(DP),脱色(DC)和脱乙酰(DA)。在这项研究中,这种方法被重新排序,导致4个化学过程序列。HCl,NaOH,乙醇(97%)和NaOH(50%)用于DM,DP,分别为DC和DA。这项研究的结果表明,按照DC-DM-DP-DA的顺序,从序列4(SQ4)中获得了较好的几丁质(23.99±0.61%)和壳聚糖(15.17±1.69%)产率。此外,在SQ4中,DDA(80.67±2.52%)和溶解度(66.43±2.61%)等理化性质显着提高(p≤0.05),从而使所得产品适合用作废水处理中的混凝剂和絮凝剂。FTIR结果,研究的XRD和SEM证明,所得产物表现出具有多孔和原纤维性质的壳聚糖的特征性质。在分析罗氏沼虾生物废物中获得的壳聚糖的物理性质时,高卡尔指数(CI)和低体积以及密度是一个迹象,表明在这项研究中生产的壳聚糖具有较差的流动性和可压缩性。从而使其不适合在制药行业中应用。
Unless better measures are put in place to address the environmental and social impacts emanating from the huge waste generated from sea food processing industries; \'tragedy of the commons\' is inevitable. Needless to re-emphasise the enormous contributions of aquaculture as the perfect substitute to capture fisheries which has been proven unsustainable. Be that as it may, the huge amount of bio-waste produced could be transformed into useful products such as chitin and chitosan with far reaching applications. Chitin and chitosan have been consistently processed from many sources following the traditional chemical sequence of Demineralization (DM), Deproteinization (DP), Decolouration (DC) and
Deacetylation (DA). In this
study, this method was re-ordered, resulting to 4 sequences of chemical processes. HCl, NaOH, ethanol (97%) and NaOH (50%) were used for DM, DP, DC and DA respectively. The results of this
study showed that better chitin (23.99 ± 0.61%) and chitosan (15.17 ± 1.69%) yields were obtained from sequence four (SQ4) following the order of DC-DM-DP-DA. In addition, physicochemical properties such as DDA (80.67 ± 2.52%) and solubility (66.43 ± 2.61%) were significantly higher (p ≤ 0.05) in SQ4 thereby making the obtained product suitable for use as coagulant and flocculant in wastewater treatment. Results of FTIR, XRD and SEM of the
study proved that the resultant product exhibited the characteristic nature of chitosan with porous and fibril nature. In the analysis of the physical properties of chitosan obtained from bio-waste of Macrobrachium rosenbergii, the high Carr\'s index (CI) and low bulk as well as tapped densities were an indication that the chitosan produced in this
study had poor flowability and compressibility, thereby making it unfit for application in pharmaceutical industries.