Enzymatic hydrolysis of orange bagasse and effect of filtration on lactic acid fermentation

Download

index.pdf

Date

2020-04-01

Author

Baltaci, Saadet Fatma
Hamamcı, Haluk

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

184
views

0
downloads

Along with the general trend of reducing waste in the agro-industrial sector, new methods are sought to utilize side or waste products. With this purpose, we examined the utilization of orange bagasse (OB) for Ca-lactate production via enzymatic hydrolysis and fermentation. The hydrolysis of OB was carried in both dried and fresh forms with cellulolytic and pectinolytic enzymes to obtain a reasonable amount of fermentable sugars for further lactic acid fermentation. A novel industrial approach was studied to increase the hydrolysis yield by reusing the former hydrolysate media. Meanwhile, lactic acid fermentation was performed with optimal OB hydrolysate by Lactobacillus delbrueckii subsp. bulgaricus OZZ4 and Lactobacillus plantarum OZH8. One of the main problems in OB utilization via fermentation was the inhibition observed on microorganisms. It was found that either by drying of the biomass prior to enzymatic hydrolysis or by filtration of the hydrolysate prepared with fresh biomass could be done in order to overcome the inhibitory effects. After treatments, lactic acid with yields around 0.95 g/g and levels of 45 g/L was produced with the fermentation of OB hydrolysate.

Subject Keywords

Orange bagasse, Enzymatic hydrolysis, Lactic acid, Fermentation, Filtration

URI

https://hdl.handle.net/11511/32059

Journal

SN APPLIED SCIENCES

DOI

https://doi.org/10.1007/s42452-020-2421-0

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Solvent recovery from photolithography wastes using cellulose ultrafiltration membranes Savaş, Aygen; Çulfaz Emecen, Pınar Zeynep (2022-04-05) Solvent recycling and reuse are indispensable for ensuring a sustainable chemical industry and circular economy. In this study we report the fabrication of cellulose ultrafiltration membranes and their application in recovery of propylene glycol methyl ether acetate (PGMEA) used as developer solvent in SU-8 photolithography. Cellulose membranes were fabricated via alkaline hydrolysis of cellulose acetate membranes in aqueous NaOH. Membrane permeance and molecular weight cut-off (MWCO) were tuned via changin...
Kinetic modeling of enzymatic hydrolysis of pretreated kitchen wastes for enhancing bioethanol production Çekmecelioğlu, Deniz (Elsevier BV, 2013-03-01) It is well known that use of low cost and abundant waste materials in microbial fermentations can reduce product costs. Kitchen wastes disposed of in large amounts from cafeterias, restaurants, dining halls, food processing plants, and household kitchens contain high amounts of carbohydrate components such as glucose, starch, and cellulose. Efficient utilization of these sugars is another opportunity to reduce ethanol costs. In this study, the effect of pretreatment methods (hot water, acid solutions, and a...
An Investigation of material waste management in prefabricated construction industry and developing a tool for effective management of waste Rahmani Mirshekarlou, Babak; Dikmen Toker, İrem; Birgönül, Mustafa Talat; Department of Civil Engineering (2018) In order to formulate effective waste reduction strategies in construction projects, it is essential to continuously monitor and analyze the waste generation and improve the existing processes continuously. This requires to establish a waste benchmark, based on the previous experiences in the organization, to assist the project team in taking efficient and timely actions to prevent the waste at source, and enhance the corporate waste management capability. The current study is carried out to explore the was...
Enzymatic Hydrolysis of Fruit Peels and Other Lignocellulosic Biomass as a Source of Sugar POCAN, Pelin; BAHÇEGÜL, Erinc; Öztop, Halil Mecit; Hamamcı, Haluk (2018-06-01) Glucose and reducing sugars were obtained from corn cobs, orange and pomegranate peels by employing different enzymatic hydrolysis and pretreatment strategies. For the hydrolysis of corn cobs, effect of alkaline pretreatment was examined. Effect of cellobiase loading on hydrolysis was also investigated. Glucose content was measured using a Blood Glucose Monitor. When cellobiase was also added to hydrolysate, glucose and TRS yield increased from 20 and 34% respectively. Unlike corncobs, alkaline pretreatment...
Resource efficient and cleaner production in selected foundries through environmental performance evaluation Usta Benli, Ayça; Demirer, Göksel Niyazi; Department of Environmental Engineering (2017) The main objective of this study was to develop Resource Efficient and Cleaner Production (RECP) measures for the ferrous foundry sector. For this purpose, environmental performance evaluation and benchmarking studies were conducted in six ferrous foundries. The environmental performance was calculated by using environmental performance indicators of specific energy and water use, metal yield and sand regeneration ratio. The gap between the benchmarks and actual performances revealed the improvement potenti...

Citation Formats

S. F. Baltaci and H. Hamamcı, “Enzymatic hydrolysis of orange bagasse and effect of filtration on lactic acid fermentation,” SN APPLIED SCIENCES, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32059.