Increasing Fiber Content Research Articles

Mechanical Behavior of Low-Strength Hydraulic Lime Concrete Reinforced with Flexible Fibers under Quasi-Static and Dynamic Conditions

We investigate the effect of flexible fiber reinforcement on low-strength hydraulic lime concrete. This type of concrete is occasionally necessary to ensure compatibility with the substrate, particularly in the conservation and rehabilitation of historical heritage. For this purpose, we designed a matrix of hydraulic lime concrete based on a mix design method we proposed previously and added different amounts of polyvinyl alcohol fiber (volumetric contents of 0.3%, 0.6%, 0.9%, and 1.2%). We then conducted three-point bending tests on prismatic specimens with a central notch under quasi-static (displacement rate of 4 × 10−4 mm/s) and dynamic (4 mm/s) conditions, using a servo-hydraulic machine. The results indicate that, in both quasi-static and dynamic regimes, the flexural strength, the residual flexural strengths for different crack openings, and the work of fracture increase as the fiber content increases. Furthermore, transitioning from one regime to another (by increasing the strain rate or velocity) leads to a significant increase in these mechanical parameters.

High-fiber and low-glycemic index egg-roll cookies made from non-itchy taro (Colocasia esculenta var. Febi521)

Indigenous taro is a notable carbohydrate-rich food ingredient with significant dietary fiber. However, its natural itchiness has limited its widespread use. A new non-itchy variant, Febi521, was developed through in-vitro soma-clonal induction. This study aimed to create a high-fiber snack, specifically egg-roll cookies, using non-itchy taro (Colocasia esculenta var. Febi521). The cookies underwent comprehensive evaluation for their physical, chemical, and nutritional characteristics, including polyphenol content, glycemic index (GI), and glycemic load (GL). By fully substituting taro Febi521 flour in the recipe, we produced egg-roll cookies that were sensorially preferred, high in fiber (19.2 % wet basis), and had a low GI (39) and low GL (3). This formulation also met nutritional requirements for claims related to total fat, saturated fat, sodium, and cholesterol. Substituting taro flour increased fiber content threefold compared to wheat flour-based egg-roll cookies. This research highlights the potential of indigenous taro for diverse product development aimed at enhancing fiber intake among the population.

An Experimental Study on the Influence of Different Cooling Methods on the Mechanical Properties of PVA Fiber-Reinforced High-Strength Concrete after High-Temperature Action.

High-strength concrete (HSC) has a high compressive strength, high density, excellent durability, and seepage resistance, but its deformation ability is weak. Adding fibers can improve the physical and mechanical properties of HSC. Additionally, the HSC structure may face the threat of fire. In the process of fire extinguishing, the damage mechanism of high-temperature-resistant concrete is complicated due to the different contact conditions with water at different locations. Hence, it is essential to conduct pertinent research on the behavior of fiber-reinforced HSC with different cooling methods after high-temperature action. In this paper, polyvinyl alcohol fiber (PVA fiber) was selected to be added into the HSC to carry out high-temperature experimental research, so as to explore the apparent changes, failure pattern, and mass loss rate of the fiber-reinforced HSC using different cooling methods and analyze the influence of its residual compressive strength and flexural strength. The test results suggest that, with the increase in heating temperature, the color of the specimen's surface transitions from dark blue-gray to white, and the quantity of surface cracks on the specimen gradually rises. The mechanical strength gradually decreases as the heating temperature increases. At a consistent heating temperature, the mechanical strength initially rises, and then falls with an increase in fiber content. The maximum compressive strength and flexural strength were achieved at PVA fiber contents of 0.2% and 0.3%, respectively. For different temperatures and fiber contents, the mechanical strength after natural cooling is generally higher than that after immersion cooling. In addition, X-ray polycrystalline diffractometry (XRD) and scanning electron microscopy (SEM) tests were conducted to analyze the compositional alterations and microstructure of the fiber-reinforced HSC following high-temperature exposure, accompanied by an explanation of the factors influencing the alterations in the physical and mechanical properties. Therefore, the findings of this study can serve as a valuable reference for the utilization of HSC in engineering structures and contribute to the advancement of HSC technology.

Thermal processing of wheat bran: Effect on the bioactive compounds and dietary fiber

In the current study bran from six wheat cultivars were subjected to different heat treatments and the effect of heat treatments on the bioactive composition, dietry fibre content and structure of wheat bran was evaluated. The findings indicated that thermally treated wheat bran contains higher soluble dietary fiber, but lower insoluble and total dietary fiber than untreated wheat bran samples. Microwave heat treatment caused highest increase in the soluble dietary fiber content and highest soluble dietary fiber content was observed in bran of WH-1105 wheat variety. The presence of six different phenolic acids evaluated were gallic acid, p-hydroxybenzoic acid, ferulic acid, syringic acid, vanillic acid, and p-coumeric. Heat treatment caused significant increase in all the six phenolic acids. The bran sample obtained from wheat variety WH-1105 showed highest level of all phenolic acid among the all-bran sample obtained from other wheat varieties. Among the all heat treatments, microwave heat treatment caused highest increase in the phenolic acids. Among all phenolic acid evaluated highest increase was observed for syringic acid after microwave heat treatment in the bran of WH-1105 wheat variety. Further it was observed that crystallinity index significantly increased after thermal treatment and microwave heating caused higher increase in crystallinity than other heat treatments.

A Real-Time Study on the Cracking Characteristics of Polyvinyl Alcohol Fiber-Reinforced Geopolymer Composites under Splitting Tensile Load Based on High-Speed Digital Image Correlations

The cracking of geopolymer caused by its brittleness characteristics could reduce the stability and durability of the building structure. Studying the cracking behavior of fiber-reinforced geopolymer composites (FRGCs) is important to evaluate the toughness strengthening of geopolymer. This paper presents a real-time study on the cracking characteristics of FRGCs under splitting tensile load based on high-speed digital image correlation (HDIC) technology. The splitting tensile test was conducted on the FRGC with different fiber content. The real-time variation of strain and displacement field during the splitting process was analyzed. The influence of fiber content on the mechanical properties and crack behavior of FRGCs was discussed. Considering the splitting strength and crack width, the optimal fiber content for FRGCs that satisfied the crack resistance requirement was proposed. The results show that the incorporation of fiber can delay the cracking time and reduce strain change during the splitting process. The splitting tensile strength and the deformation increase as fiber content increases, while the crack width decreases as fiber content increases. The FRGC with 2.0% fiber content can maintain a crack width smaller than 0.1 mm, which satisfies the crack resistance requirements of practical engineering for economic consideration.

Effect of different fibers and fiber contents on the mechanical properties and failure behavior of early age cemented lithium feldspar tailings backfill

The cemented lithium feldspar tailings backfill (CLFTB) samples with different fiber types and contents were prepared and subjected to uniaxial compression tests. The results show that glass fiber had the best improvement effect on UCS. With the increase in fiber content, the UCS showed a trend of first increasing and then decreasing, increasing from 1.138 MPa to 2.017 MPa and then decreasing to 1.907 MPa, with the optimal content being 0.6%. The relationship between the strength gain percentage (SGP) and the peak strain gain coefficient γ with fiber content was analyzed. As the fiber content increased, SGP first increased and then decreased while γ gradually increased. Fibers enhanced the ductility, peak load-bearing capacity, and dissipative energy required for the failure of CLFTB. Furthermore, showing greatly enhanced crack resistance in FRCLFTB, evidenced by an increase in the number of fine cracks and a decrease in fragment detachment.

CRFP Mechanical Properties—Stated Values Versus Experimental Data

Abstract This study thoroughly examines the mechanical properties of carbon fiber-reinforced polymers (CFRPs), motivated by the critical need for accurate composite property data in investigating fracture control measures for structures subjected to barely visible impact damage. We compared experimental results with manufacturer-stated values, focusing on discrepancies in fiber volume fraction and its impact on elastic modulus. Experimental findings showed an increase in elastic modulus to 190 GPa for 0 deg orientation samples, compared to the manufacturer's stated value of 159.27 GPa. The recalculated fiber volume fraction increased from the expected 57% to an actual value of 60.96%. This increase in fiber content, determined through the Voigt modulus equation and corroborated by SEM image analysis, directly contributed to the observed variations in elastic modulus. Tension tests at 0 deg and 90 deg angles exhibited average percentage errors of 14.83% and 11.57%, respectively, while compression tests at 0 deg displayed a deviation of approximately −13.92% after adjusting for values beyond 0.05% compressive strain. The study underscores the critical impact of fiber volume fraction on CFRP properties and highlights the importance of precise empirical evaluation for accurate CFRP characterization in applications such as aerospace engineering.

Valorization of Pumpkin Flour in Cookie Formulations: Effects on Nutritional Composition and Mineral Content

Pumpkin is a highly nutritious food that offers protective benefits against various health conditions, such as diabetes, cardiovascular diseases, constipation, appendicitis, hemorrhoids, and colon cancer. This study aimed to examine the proximate composition of pumpkin-wheat cookies. An experimental research approach was employed to produce pumpkin powder, incorporate it into cookie production, and analyze its nutritional constituents. The results revealed that as the proportion of pumpkin flour in the composite flour increased, there was a corresponding increase in moisture, ash, fat, protein, and fiber content. Additionally, the study demonstrated an increase in mineral content with higher amounts of pumpkin. The iron and manganese levels ranged from 244.1mg/kg to 312.1mg/kg and 74.52mg/kg to 88.17mg/kg, respectively. Calcium and potassium contents also ranged from 0.24% to 0.40% and 0.39% to 0.57%, respectively. The beta-carotene content of the samples varied between 0.18mg/kg to 0.57mg/kg, while the folic acid content ranged from 13.7ug/g to 144.95ug/g.

Porous ZrO2–ZrO2 ceramics with excellent mechanical strength and permeability for transpiration cooling

AbstractThe great development of transpiration cooling technology challenges the coolant medium seriously. In this paper, porous ZrO2–ZrO2 ceramics have been satisfactorily prepared to meet the requirements of the coolant medium in transpiration cooling. The results illustrate that porous ZrO2–ZrO2 ceramics have excellent compressive strengths; meanwhile, percentages of compressive strength difference (parallel and perpendicular to the mold‐pressing direction) have an upward trend due to the increasing fiber contents. Besides, the failure mode has a huge distinction between parallelity (45° oblique section) and perpendicularity (wedge shape). These ceramics have unimodal pore size distribution (2–10 µm), and their wettability has a substantial improvement reflected by contact angle from 118° to 0°. Permeability behavior across these ceramics has been accurately described using the Darcy–Forchheimer equation, while obtaining viscous and inertial resistance coefficients, respectively. This work can provide an essential reference for coolant medium in transpiration cooling.

Load-bearing behavior of short-fiber-reinforced textile-reinforced concrete for a wrapping process

In the research project titled Wrapping process for highly fiber-reinforced concrete using the example of a pump sump (WiFaPu), a new production process for components made of short-fiber-reinforced textile-reinforced concrete was developed. The idea of wrapping concrete continuously around a formwork evokes high-level requirements on the workability of concrete while matching reinforcement properties. In this study, the load-bearing behavior of wrappable short-fiber-reinforced textile-reinforced concrete with an uncoated textile reinforcement made of AR-glass is investigated via tensile and bending tests. The concrete inserted into the wrapped layers by casting, laminating or spraying and the short fiber content and warp/weft direction of the uncoated fabric have a major influence on the load-bearing behavior of the tested specimens with regard to the utilized tensile strength and crack spacing. Members produced by inserting the concrete in a spraying or laminating process showed low tensile strength and unsatisfactory cracking patterns in the warp direction of the fabric due to the lacing of rovings, which led to lower matrix penetration. For rovings in the weft direction without lacings, higher utilized tensile strengths and fine crack patterns are observed. The casting of specimens leads to significantly higher utilized textile tensile strengths if the reinforcement is slightly tightened in the formwork. Compacting fine-grained concrete leads to better roving penetration than does the spraying process. The addition of short fibers generally benefits the cracking pattern and partially compensates for the negative effects of the textile weave on the utilized tensile strength as well as on the warp direction of the crack pattern. The load increase in tensile and bending tests is proportional to the increase in short fiber content and fiber length. Finally, the influence of different coatings is examined for another uncoated textile reinforcement made of AR-glass with a more favorable textile weave. The utilized tensile strength of the reinforcement is almost doubled when impregnated with a fine cement suspension and directly installed in the formwork and cast. An impregnation process such as this can also be integrated into the wrapping process.

Effect of Defoliation on Growth, Yield and Forage Quality in Maize, as a Simulation of the Impact of Fall Armyworm (Spodoptera frugiperda)

This study assesses the impact of defoliation applied to three developmental stages across three cropping seasons from 2021 to 2023 on growth, yield and forage quality in maize. The experimental design included three treatments: defoliation of three expanded leaves at the 3rd–4th leaf stage (DF1), the 5th–6th expanded leaves by leaf punch (DF2) and expanding leaves with the DF2 treatment (DF3) at the 6th–7th leaf stages, compared with no defoliation (control). Over three years, the most significant decrease in dry matter (DM) yield occurred in DF1 during spring sowing, while in summer sowing, the largest reduction was in DF3, both of which were correlated with changes in the number of grains per ear. The DM yields at harvest were positively correlated with plant leaf areas at the silking stage. The digestibility of forage in in vitro DM decreased concomitantly with an increase in acid detergent fiber content, indicating a decrease in forage quality. Given the frequent severe damage observed in summer sown maize and the detrimental effects of early growth stage leaf feeding on quality and quantity of spring sown maize, the application of registered insecticides is advised to reduce pest damage to maize crops.

Optimizing water Absorption’s influence on composite mechanics through response surface methodology

This study systematically examines how different fiber contents—Diss, Sisal, and luffa—affect the mechanical properties of bio-composites at rates of 10%, 15%, and 25%, with a particular focus on water absorption behavior. It investigates the relationship between water absorption and bending behavior, utilizing response surface methodology (RSM) optimization and analysis of variance (ANOVA) to thoroughly analyze input parameters, including a 44-day absorption duration, fiber type, and fiber content. The findings reveal that sisal-reinforced composites demonstrate the highest flexural strength, with an average stress of 31.15 ± 1.82 MPa for a 10% sisal fiber rate. However, an increase in fiber content leads to a decrease in mechanical properties and an increase in water absorption, with water absorption ratios of 2%, 3% and 5% for sisal biocomposites at fiber rates of 10%, 15% and 25%, respectively. The study’s reliability is confirmed by a significant R-squared coefficient of 0.94, indicating strong consistency between predicted and observed results. This comprehensive investigation offers valuable insights into how varying fiber content impacts both mechanical performance and water absorption in fiber-reinforced composites.

Development of Fruit Bar Using Composite Fruit Peel Powder

The main objective of the present investigation was to prepare the composite fruit peel powder using dragon fruit albedo powder and pineapple fruit peel powder and to prepare fruit bars using this composite fruit peel powder of different compositions. The recipe for fruit bar was formulated and studied by keeping all the other ingredients same (sugar syrup (40%), almonds (10%), cashew (10%), dried dates (6%), peanut butter (3.5%) and salt (0.5%) except the varying percentage of rice flakes (5% & 20%) & composite fruit peel powder (25% & 10%). The fruit bars prepared with this composition were evaluated for sensory attributes and the nutritional analysis of most acceptable fruit bar was done. It was observed that the fruit bar sample having 7% dragon fruit albedo powder, 3% pineapple fruit peel powder & 20% rice flakes was most accepted by panel. Nutritional analysis reported that there was significant increase in protein, fibre and ash content of developed fruit peel bar by 9.51%, 22.4% and 34.64% respectively. Keywords: Fruit bar, dragon fruit, pineapple fruit, peel powder, nutritional attributes.

An experimental investigation on freeze-thaw resistance of fiber-reinforced red mud-slag based geopolymer

This study aims to investigate the influence of different fiber types, lengths, and contents on their performance in freeze-thaw environments. Indoor freeze-thaw tests were conducted to evaluate the flexural strength, compressive strength, and mass loss of fiber-reinforced geopolymer materials. Additionally, SEM and XRD analyses were performed to examine the internal structure of the geopolymer composites. The results demonstrated that the incorporation of different fibers significantly improved various properties, particularly the flexural strength of the specimens. With an increasing number of freeze-thaw cycles, surface cracks became more prominent in the geopolymer specimens, leading to a gradual decrease in frost resistance. However, the addition of an appropriate amount of fiber effectively enhanced frost resistance. Following freeze-thaw exposure, an increase in fiber content initially resulted in a decrease and subsequently an increase in relative flexural strength, compressive strength, and mass loss. Notably, studies revealed that polypropylene fibers with a length of 9 mm and a content of 0.9 % exhibited minimal mass and strength loss. SEM analysis indicated uniform distribution of fibers within the geopolymer matrix, contributing to improved flexural strength and enhanced frost resistance in fiber-reinforced structures. XRD results indicate that red mud-slag based geopolymers produce high-strength hydrated calcium (aluminosilicate) silicate and hematite phases, which enhances the mechanical properties and durability of the specimens. In conclusion, this study highlights that incorporating suitable fibers can enhance the durability and performance of red mud-slag based geopolymers under freeze-thaw conditions. The findings provide valuable insights for optimizing fiber type, length, and content to achieve superior mechanical properties and frost resistance in geopolymer composites.

Effect of Carbon Fiber Paper with Thickness Gradient on Electromagnetic Shielding Performance of X-Band.

Flexible paper-based materials play a crucial role in the field of flexible electromagnetic shielding due to their thinness and controllable shape. In this study, we employed the wet paper forming technique to prepare carbon fiber paper with a thickness gradient. The electromagnetic shielding performance of the carbon fiber paper varies with the ladder-like thickness distribution. Specifically, an increase in thickness gradient leads to higher reflectance of the carbon fiber paper. Within the X-band frequency range (8.2-12.4 GHz), reflectivity decreases as electromagnetic wave frequency increases, indicating enhanced penetration of electromagnetic waves into the interior of the carbon fiber paper. This enhancement is attributed to an increased fiber content per unit area resulting from a greater thickness gradient, which further enhances reflection loss and promotes internal multiple reflections and scattering effects, leading to increased absorption loss. Notably, at a 5 mm thickness, our carbon fiber paper exhibits an impressive average overall shielding performance, reaching 63.46 dB. Moreover, it exhibits notable air permeability and mechanical properties, thereby assuming a pivotal role in the realm of flexible wearable devices in the foreseeable future.

Different Concentrations Of Cassava Flour (Manihot utilisima) And Wheat Flour On The Physicochemistry And Organoleptic Quality Of High-Fiber Steamed Brownies

At present, the level of public consumption of wheat flour is increasing but the production of wheat in Indonesia is very minimal so Indonesia still expects imports from several countries. Meanwhile, the use of low-fiber wheat flour can increase peoples consumption in excess, so it can increase excess calorie levels in the body which can trigger obesity. Therefore, it necessary to substitute local-based flour such as cassava flour to reduce wheat flour consumption and increase fiber content in the resulting product. This study aims to determine the effect of different concentrations of wheat flour and cassava flour and determine the right concentration on the chemical and organoleptic quality of steamed brownies as high fiber food. The research method used a a research design using a 1-factor Completely Randomized Design (CRD) with 4 treatments and 3 replications. Chemical quality analysis on steamed brownies, namely water content, crude fiber content, and calories. The organoleptic test is color, aroma, taste, and tenderness. The results showed that between different proportions of wheat flour and cassava flour had a significant effect on crude fiber content and very significant effect on calorie content. Based on the determination of all research parameters, it shows that formulation 3 with 60 grams wheat flour and 40 grams cassava flour is the best treatment with a result value (NH) 0.692 with parameter criteria in the form crude fiber content 22.9%, calorie content 6.74 cal, moisture content 19.04%, tenderness 3.68 (like), color 3.96 (like), taste 3.78 (like), and aroma 3.89 (like).

Retention of E-selectin functionalized liposome fanny packs on Jurkat cells following invasion through collagen

Circulating immune cells are an appealing candidate to serve as carriers of therapeutic cargo via nanoparticles conjugated to their surface, for several reasons: these cells are highly migratory and can squeeze through small pores of diameter smaller than their resting size; they are easily accessible in the peripheral blood via minimally invasive IV injection of particles, or can be harvested, processed ex vivo, and reintroduced to the body; they are adept at traveling through the circulation with minimal destruction and thus have access to various tissue beds of the body; and immune cells have built-in signal transduction machinery which allows them to actively engage in chemotaxis and home to regions of the tissue containing tumors, invading microorganisms, or injuries in need of wound healing. In this study, we sought to examine and quantify the degree to which nanoscale liposomes, functionalized with E-selectin adhesion receptor, could bind to a model T cell line and remain on the surface of the cells as they migrate through collagen gels of varying density in a transwell cell migration chamber. It is demonstrated that physiological levels of fluid shear stress are necessary to achieve optimal binding of the E-selectin liposomes to the cell surface as expected, and that CD3/CD28 antibody activation of the T cells was not necessary for effective liposome binding. Nanoscale liposomes were successfully conveyed by the migrating cells across a layer of rat tail type 1 collagen gel ranging in composition from 1 to 3 mg/mL. The relative fraction of liposomes carried through the collagen decreased at higher collagen density, likely due to the expected decrease in average pore size, and increased fiber content in the gels. Taken together, these results support the idea that T cells could be an effective cellular carrier of therapeutic molecules either attached to the surface of nanoscale liposomes or encapsulated within their interior.

Modeling and evaluation of the fracture resistance of alkali-resistant glass fibre reinforced concrete under different loading rates

Alkali-resistant glass fibre reinforced concrete (AR-GFRC) has garnered significant interest due to its economic and environmental friendliness. Given the critical importance of evaluating the crack resistance of AR-GFRC under dynamic loading conditions and the size effect inherent in determined fracture parameters using traditional methods, this study aims to propose an analytical approach based on the boundary effect model. The goal is to predict the realistic dynamic tensile strength (ft) and fracture toughness (KIC) while elucidating the rate sensitivity of fracture resistance. Three-point bending tests were conducted on AR-GFRC with three different fibre volumes to investigate dynamic fracture behaviors under varying loading rates. By introducing discrete parameter and the microstructure characteristic parameter that account for material discontinuity and heterogeneity, the realistic dynamic ft and KIC of AR-GFRC can be directly obtained as closed-form solutions upon determining the maximum fracture load from the tests. The results revealed a substantial increase in ft and KIC with an improvement in the loading rate. However, due to relatively weakened fibre activities, the enhancement of dynamic fracture resistance decreases with the increase in fibre content and loading rate.

Effect of Modifiers on the Disintegration Characteristics of Red Clay

Due to the high degree of weathering, the red clay slope has low anti-disintegration performance, and the clay easily becomes wet and disintegrates after soaking in water. It causes geological problems such as slope collapse caused by soil softening. To study the disintegration characteristics of modified red clay, the disintegration test of red clay modified by using lignin fiber, clay particles and lime was carried out, analyzing the disintegration characteristics of improved red clay from physical and chemical perspectives and analyzing the improvement mechanism of three modifiers with the scanning electron microscopy test. The analysis results show that the water-holding capacity and disintegration resistance of soil mixed with lignin fiber decrease; the disintegration time of reshaped red clay increases with the increase in clay content; and the average disintegration rate of the soil decreases with the increase in clay content. With the increase in lime content, the soil cement increases. The integrity of the soil is enhanced, and its anti-disintegration ability is improved; the saturated moisture content of reshaped red clay increases with the increase in lignin fiber and clay content, while the saturated moisture content of soil decreases with the increase in lime content. The damage analysis shows that the larger the damage factor of soil, the worse its anti-disintegration ability, and the easier the soil disintegrates. The purpose of this paper is to explore the essence of the soil disintegration phenomenon, and on this basis, using high-quality improved materials, to improve the soil, which easily disintegrates. This move aims to significantly enhance the anti-disintegration ability of the soil, thereby improving its resistance to softening and disintegration, thereby effectively improving and maintaining the ecological environment. At the same time, the improved soil will help to improve the utilization rate of the slope and foundation soil, thereby reducing the economic cost of maintenance engineering. Against the current background of sustainable economic, social, and ecological development, it is of great strategic significance to ensure the sustainable availability of land resources in specific areas and maintain their productivity and ecological stability for a long time. The research into this subject not only helps to deepen the understanding of soil disintegration, but also provides strong technical support for the rational utilization of land resources and the protection of the ecological environment.

Effect of high plant protein diet supplemented with Lysophospholipids-butyrate on the growth performance, liver health and intestinal morphology of Largemouth bass (Micropterus salmoides)

This study was conducted to evaluate the effects of dietary supplementation with lysophospholipids-butyrate (LPB) in a high plant protein diet on the growth performance, liver health, and intestinal morphology of Largemouth bass (Micropterus salmoides). Three experimental diets were formulated: a positive control diet (PC) containing 15.00 % soybean meal (SBM) and 13 % chicken meal；a high-plant-protein diet (HPP) with 28.00 % SBM; a diet (LPB) supplemented LPB at 0.1 % in HPP. Largemouth bass with an average initial body weight of 9.3 g were fed for 60 days, with 4 replicates per group and 20 fish per replicate. The results demonstrated that the HPP group exhibited significantly lower final body weight (FBW), weight gain rate (WGR) and specific growth rate (SGR) compared to the PC group. Moreover, the HPP diet induced a notable increase in liver collagen fiber and liver lipid content, which was alleviated by LPB supplementation. In comparison to the HPP group, the LPB group showed significant increases in serum albumin and albumin/globulin, along with a significant decrease in alanine aminotransferase activity (P < 0.05). Compared with the PC group, the mRNA levels of acetyl-CoA carboxylase-1 (ACC-1), diacylglycerol acyltransferase (DGAT), carnitine palmitoyl transferase-1 (CPT-1) and tumor necrosis factor-α (TNF-α) in HPP group were increased significantly (P < 0.05), while adipose triglyceride lipase (ATGL), hormone-sensitive lipase (HSL) as well as apoptotic gene B-cell lymphoma-2 (Bcl-2) were significantly down-regulated. The mRNA levels of fatty acid synthase (FAS), ACC-1, peroxisome proliferator activated receptor-α (PPAR-α), ATGL, interleukin-1β (IL-1β), transforming growth factor-β (TGF-β) and Bcl-2 were up-regulated (P < 0.05), while DGAT and TNF-α were down-regulated in the LPB supplemented groups than that in the HPP group (P < 0.05). In conclusion, the supplementation of 0.1 % LPB can alleviate liver lipid accumulation and fibrosis caused by high level of soybean meal.