This study provides a detailed assessment of bioengineered chitosan as an eco-friendly adsorbent for multi-metalcontaminated industrial wastewater, integrating physicochemical characterization, mechanistic analysis, and artificial intelligence (AI)-based modeling. The chitosan displayed a high degree of deacetylation (85 %), mesoporosity (12.4 nm), and a point of zero charge (pHpzc = 6.4), enhancing metal chelation and electrostatic adsorption. Effluent from the Gafsa-Metlaoui phosphate washing plant presented elevated concentrations of Cd2+ (26.5 mg L-1), Pb2+ (13.7 mg L-1), and Mo6+ (55.8 mg L-1), surpassing regulatory thresholds. Batch experiments achieved maximum removal efficiencies of 90 f 0.1 % for Pb, 85 f 0.9 % for Cd, 75 f 0.2 % for Cu, and 70 f 0.4 % for Zn under optimized parameters (pH 6.5, 120 mg, 180 min). Four machine learning models (RF, GBM, SVM, and ANN) trained on experimental datasets further predicted adsorption performance, with Random Forest achieving the highest accuracy (R2 = 0.954; RMSE = 0.53). Three-dimensional response surface analysis highlighted the critical impact and synergistic effects of operational conditions (pH, contact time, sorbent mass) on adsorption efficiency and identified optimal zones for different metals. Metal-specific adsorption dynamics were systematically correlated with physicochemical descriptors (polarizability, charge density, hydration energy, and redox potential), providing mechanistic insight into selective metal chelation and validating Hard and Soft Acids and Bases (HSAB) theory. This study uniquely integrates metal descriptor-driven mechanistic understanding with AI-guided optimization and operational parameter analysis, underscoring chitosan's efficiency as a multi-metal sorbent and providing a practical approach for designing advanced, scalable wastewater treatment strategies.

Glycosaminoglycans (GAGs) are the carbohydrate portion of proteoglycans (PGS), a family of complex biomacromolecules ubiquitously found in the extracellular matrix and on cell surfaces that play critical roles in a plethora of physiological and pathological processes. In the present work, chondroitin sulfate (CS) and dermatan sulfate (DS) were extracted and purified from the head (GCB) and skin (GDB) of blue runner fish (Caranx crysos) to explore their structural features and biological properties. GCB and GDB were purified by ion-exchange chromatography with yields of 0.82% and 0.61%, respectively. Chemical and structural analysis showed that GCB and GDD demonstrated quite similar sulfation degrees (4.45% and 4.24%, respectively). The molecular weight values obtained for GCB and GDB as estimated by high-performance size exclusion chromatography coupled with a triple detector array (HP-SEC-TDA) were 48.9 and 28.54 KDa, respectively. Structural features were elucidated using FT-IR and 2D NMR spectroscopy. GCB was mainly identified as chondroitin sulfate, containing 82% GlcA and minor proportions of IdoA and IdoA2S (scoring 18% dermatan-like structures). In contrast, GDB was predominantly dermatan sulfate, with a higher unsulfated IdoA content (54%) and a lower GlcA percentage (17%). In vitro anticoagulant activity, evaluated using APTT and PT assays, demonstrated that both GAGs exhibit significant anticoagulant potential. In addition, both fractions exhibited no antiplatelet activity, suggesting that the isolated glycosaminoglycans selectively target the coagulation cascade without affecting platelet aggregation. Furthermore, hemolytic assays confirmed that neither GCB nor GDB showed any hemolytic activity at the tested concentrations. Cytotoxicity assessment in HEK293 and HUVEK cell lines further confirmed the absence of detectable toxicity even at high concentration. Overall, these marine-derived GAGs present promising therapeutic potential as a source of anticoagulant drugs.

This study developed biodegradable levan-chitosan composite films for beef filet packaging, optimizing their functional properties and assessing their efficacy in food preservation. Films were prepared via solution casting using varying levan-chitosan ratios (100:0, 75:25, 50:50, 25:75, 0:100) with glycerol (30%) as a plasticizer. The L25:C75 formulation exhibited superior mechanical properties (tensile strength: 15.43 ± 0.04 MPa; elongation at break: 35.37 ± 1.12%) and high-water solubility (46.64 ± 0.37%). FTIR analysis confirmed intermolecular interactions between levan and chitosan. The films demonstrated strong antioxidant activity (91% ABTS•+ inhibition) and broad-spectrum antibacterial effects, with inhibition zones of 18 ± 0.30 mm against E. coli and 16 ± 0.20 mm against S. aureus. When applied to beef filets stored at 4 °C for 7 days, the L25:C75 films reduced total viable bacterial counts by 1.8 log CFU/g compared to LDPE packaging. Biodegradability tests revealed a 68% degradation rate for high-levan films (L75:C25) after 14 days in soil. These results highlight the potential of levan-chitosan films as sustainable, active packaging materials to extend food shelf life while addressing environmental concerns.

Phycocyanin (PC), a primary light-harvesting pigment derived from Spirulina platensis, finds extensive application owing to its biological properties. In this study, we present an efficient procedure for the extraction of PC pigment, followed by a thorough exploration of its biological activities. A novel extraction method, involving a four-step process including cell lysis through freeze-thawing, maceration, centrifugation, and tangential microfiltration, was employed, resulting in purity index of 1.32. The crude PC was analyzed by UV–visible and FTIR spectroscopy. SDS-PAGE analysis showed two bonds corresponding to α (17 kDa) and β (20 kDa) subunits of PC. The crude PC was examined for its antioxidant activity through diverse antioxidants assays, including assessments of DPPH radical-scavenging capacity, reducing power, and ABTS assay. In addition, assays assessing antimicrobial activity revealed significant inhibitory effects of the crude PC against various bacterial and fungal strains. The inhibitory effect of crude PC on the proliferation of human breast cancer cells (MCF-7) was detected by MTT assay. Interestingly, crude PC was most active with 59.2

The industrial processing of Argentine shortfin squid to obtain rings generates a significant amount of protein-rich waste, including the skin, which is rich in collagen and attached myofibrillar proteins. This waste is generally discarded. In this study, skin was used as a source of proteins that were hydrolysed using Trypsin, Esperase® or Alcalase®, which released peptides with antioxidant potential and, in particular, antihypertensive (ACE inhibition), hypoglycemic (DPP-IV inhibition) and/or nootropic (PEP inhibition) potential. Among the three enzymes tested, Esperase® and Alcalase produced hydrolysates with potent ACE-, DPP-IV- and PEP-inhibiting properties. These hydrolysates underwent chromatography fractionation, and the composition of the most bioactive fractions was analysed using HPLC-MS-MS. The fractions with the highest bioactivity exhibited very low IC50 values (16 and 66 µg/mL for ACE inhibition, 97 µg/mL for DPP-IV inhibition and 55 µg/mL for PEP inhibition) and were mainly derived from the hydrolysate obtained using Esperase®. The presence of Leu at the C-terminal appeared to be crucial for the ACE inhibitory activity of these fractions. The DPP-IV inhibitory activity of peptides seemed to be determined by the presence of Pro or Ala in the second position from the N-terminus, and Gly and/or Pro in the last C-terminal positions. Similarly, the presence of Pro in the peptides present in the best PEP inhibitory fraction seemed to be important in the inhibitory effect. These results demonstrate that the skin of the Argentine shortfin squid is a valuable source of bioactive peptides, suitable for incorporation into human nutrition as nutraceuticals and food supplements.

In this study, glycosaminoglycans (GAGs) were extracted from corb (Sciaena umbra) heads and thoroughly examined for their structure. Through cellulose acetate electrophoresis, the GAGs were identified as chondroitin sulfate (CS), with a recovery yield of 10.35%. The CS exhibited notable characteristics including a high sulfate content (12.4%) and an average molecular weight of 38.32 kDa. Further analysis via 1H NMR spectroscopy and SAX-HPLC revealed that the CS primarily consisted of alternating units predominantly composed of monosulfated disaccharides at positions 6 and 4 of GalNAc (52.6% and 38.8%, respectively). The ratio of sulfate groups between positions 4 and 6 of GalNAc (4/6 ratio) was approximately 0.74, resulting in an overall charge density of 0.98. Thermal properties of the CS were assessed using techniques such as differential scanning calorimetry and thermogravimetric analysis. Notably, the CS demonstrated concentration-dependent prolongation of activated partial thromboplastin time (aPTT) and thrombin time (TT) while showing no effect on platelet function. At 200 μg/mL, aPTT and TT coagulation times were 1.4 and 3.7 times faster than the control, respectively. These findings suggest that CS derived from corb heads holds promise as an anticoagulant agent for therapy, although further clinical investigations are necessary to validate its efficacy.

An efficient synthesis of new gamma,delta-insaturated delta-lactam and glutarimide derivatives bearing a phosphonomethyl group from a common allylphosphonate precursor is described. Our approach is based on a two-step procedure involving the preparation of phosphonated-1,5-ketoester and -1,5-diester followed by an amidation-heterocyclization sequence. The first step proceeds via Michael's addition of ethyl acetoacetate and diethyl malonate on an allylphosphonate starting material. The second step consists of a base-promoted intramolecular amidation-cyclization sequence with primary amines, which accounts for the construction of delta-lactams and glutarimide skeletons. We performed the evaluation of angiotensin I-converting enzyme (ACE) inhibition using an in vitro enzyme assay on six new compounds. Five compounds showed potent ACE inhibitory activity, with IC50 values ranging from 0.02 to 0.27 mg/ml. Compared with Captopril, used as a reference drug, two new glutarimide derivatives exhibited higher efficiency ACE inhibition activity.

•Hake heads protein hydrolysates (HHPH) were produced using proteases.•HHPH is successful in inhibiting the lipid peroxidation and DNA damage.•HHPH was able to enhance in vivo antioxidant enzymes.•HHPH improve the liver architecture by cholesterol-lowering and antioxidant effects.

Water-soluble polysaccharides were extracted from baobab (Adansonia digitata) fruit pulp (BPCP) in overall yield of 2.67%. The crude polysaccharides consisted of 75.14% carbohydrates, mainly xylose (28.5%), glucose (21.7%), galactose (18.2%) and arabinose (17.8%) and minor amount of rhamnose and galacturonic acid (4.4%). FTIR and 13C NMR studies revealed the presence of key functional groups whereas morphological study of BPCP showed a homogeneous matrix with a micro-porous structure. The obtained polysaccharides presented good thermal stability with an optimal temperature of 250 degrees C. Antioxidant tests demonstrated that BPCP exhibited interesting DPPH, ABTS radical scavenging, ferrous ion chelation and reducing antioxi-dant power. The present study explored also the potential of BPCP as source of antibacterial and antihyper-tensive compounds. The results of this work strongly suggest the promising potentials of baobab fruit pulp as good sources of polysaccharidic compounds that can be further used for food and pharmaceutical applica-tions. (c) 2023 SAAB. Published by Elsevier B.V. All rights reserved.

Tub gurnard is a highly abundant fishery species caught as a discard in the Mediterranean Sea. This work proposes its valorisation through the release of potential antihypertensive peptides and glycosaminoglycans (GAGs) through the controlled hydrolysis of tub gurnard skin proteins. Four proteases (Esperase, Alcalase, Trypsin and Pronase E) were used to obtain potent angiotensin converting enzyme I (ACE)-inhibitory hydrolysates. Peptides and GAGs were separated and evaluated for their antihypertensive potential by fluorometry. The peptide-rich fractions derived from the Esperase and Alcalase hydrolysates showed very low IC50 values (47 and 68 μg/mL, respectively). Only the GAGs from the Trypsin and Esperase hydrolysates were relevant ACE inhibitors (63 and 52% at 1 mg/mL, respectively). The peptide composition of the most potent ACE-inhibitory fractions derived from the Esperase and Alcalase hydrolysates (IC50 values of 33 and 29 μg/mL, respectively) was analysed by RP-LC-ESI-MS/MS. The analysis suggests that the ACE-inhibitory activity is related to the peptide hydrophobicity, as well as to the presence of specific residues at any of the last four C-terminal positions. The in silico gastrointestinal digestion of these fractions yielded small peptides with antihypertensive potential.

Abstract The objective of this work was to purify the small (705 Da) and hydrophilic antimicrobial Arg-Asp-Arg-Phe-Leu peptide from RuBisCO protein hydrolysate and to evaluate its effect on the microbiological and oxidative stability of beef mince during refrigeration. RuBisCO was obtained from alfafa green juice. The peptide extract was fractionated using RP-HPLC, and the active fractions were analyzed by liquid chromatography, electrospray ionization, and tandem mass spectrometry (LC-ESI-MS). Beef mince was analyzed in the following treatments: negative control, meat with two different BHT concentrations of 0.1 and 0.5% (w/w), and meat with two different Arg-Asp-Arg-Phe-Leu peptide concentrations of 0.1 and 0.5% (w/w). Lipid oxidation using the thio-barbituric acid-reactive substance (TBARS) values were significantly affected by the storage period and the concentration of bioactive peptide. Arg-Asp-Arg-Phe-Leu, a small antibacterial peptide from RuBisCO, can be isolated and purified by HPLC from alfafa green juice with retention time between 10 and 50 min, which corresponds to antimicrobial peptides. RuBisCO peptide Arg-Asp-Arg-Phe-Leu 0.5% increases oxidative stability of beef mince during refrigeration. RuBisCO peptide Arg-Asp-Arg-Phe-Leu inhibit microbial growth under refrigeration for 11 days.

Glycosaminoglycans (GAGs) play a crucial role due to their significant biomedical functions. Chondroitin sulfate (CS) and dermatan sulfate (DS), the main representative family of GAGs, were extracted and purified from garfish (Belone belone) by-products, i.e., skin (GSB), bones (GCB), and heads (GHB), and their composition and anticoagulant activity were investigated. CS/DS were purified by ion-exchange chromatography with yields of 8.1% for heads, 3.7% for skin, and 1.4% for bones. Cellulose acetate electrophoresis was also explored for analyzing the extracted CS/DS. Interestingly, GHB, GSB, and GCB possessed sulfate contents of 21 ± 2%, 20 ± 1%, and 20 ± 1.5%, respectively. Physico-chemical analysis showed that there were no significant differences (p > 0.05) between the variances for sulfate, uronic acid, and total sugars in the GAGs extracted from the different parts of fish. Disaccharide analysis by SAX-HPLC showed that the GSB and GCB were predominately composed of ΔDi-4S [ΔUA-GalNAc 6S] (74.78% and 69.22%, respectively) and ΔDi-2,4S [ΔUA2S-GalNAc 4S] (10.92% and 6.55%, respectively). However, the GHB consisted of 25.55% ΔDi-6S [ΔUA-GalNAc 6S] and 6.28% ΔDi-2,6S [ΔUA2S-GalNAc 4S]. Moreover, classical anticoagulation tests were also used to measure their anticoagulant properties in vitro, which included the activated partial thromboplastin time, prothrombin time, and thrombin time. The CS/DS isolated from garfish by-products exhibited potent anticoagulant effects. The purified CS/DS showed exceptional anticoagulant properties according to this research and can be considered as a new agent with anticoagulant properties.

This work studies the extraction and purification of a novel arabinogalactan from pistachio external hull. It was extracted with a simple method from pistachio hull which is considered as unexploited waste. Based on the results of sugar analysis by GC-FID, glycosidic linkage by GC-MS, NMR spectroscopy, and molecular weight by Size Exclusion Chromatography, pistachio hull water soluble polysaccharides (PHWSP) were identified as a type II arabinogalactan (AG), with characteristic terminally linked alpha-Araf, (alpha 1 -> 5)-Araf, (alpha 1 -> 3,5)-Araf, terminally linked beta-Galp, (beta 1 -> 6)-Galp, and (beta 1 -> 3,6)-Galp. DEPT-135, HSQC, HMBC and COSY NMR data suggested the presence of (beta 1 -> 3)-Galp mainly branched at O-6 with (beta 1 -> 6)-Galp chains, alpha-Araf chains, and terminally linked alpha-Araf. These AG from pistachio external hulls showed in vitro stimulatory activity for B cells, suggesting their possible use as an immunological stimulant in nutraceutical and biomedical applications.

Foodborne diseases caused by resistance of microorganisms to multiple antimicrobial agents have emerged as a major public health concern around the world. The search for potential antimicrobials has resulted in the emergence of metal nanoparticles for protection against these infections. In this study an eco-friendly and green approach was used to biosynthesize hybrid Ag/AgCl nanoparticles (NPs), using levan from Bacillus mojavensis as a stabilizing/reducing agent, with a high efficiency against a broad spectrum of foodborne bacteria as well as biofilm formations. The morphology and physicochemical characteristics of levan-Ag/AgCl NPs were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis spectroscopy (UV), dynamic light scattering (DLS) and thermogravimetric analysis (TGA). The hybrid levan-Ag/AgCl was evaluated for antibacterial activity against foodborne pathogenic bacteria (Escherichia coli, Klebsiella pneumoniae, Salmonella enterica, Pseudomonas aeruginosa, Staphylococcus aureus, Micrococcus luteus, Listeria monocytogenes, Enterococcus faecalis, Bacillus subtilis and Bacillus thuringiensis). The study demonstrated the strong efficiency of hybrid levan-Ag/AgCl NPs as a potent inhibitor against all tested strains, with much higher activity against Gram-negative than Gram-positive bacteria. Furthermore, bacterial strains were found to be highly sensitive to hybrid levan-Ag/AgCl NPs in comparison to the tested antibiotics. As a possible application of levan-Ag/AgCl NPs as an additive in packaging, PVA films with different amounts of hybrid levan-Ag/AgCl NPs were prepared by casting and their antibacterial, mechanical, and optical properties and ability to expand the shelf life of beef meat were explored. Interestingly, the amount of Ag leached out from films was below the permissible limit. This work demonstrates the strong antibacterial action of hybrid levan-Ag/AgCl NPs and their potential use in bioactive packaging material.

The present work aims to study physical, techno-functional and antioxidant properties of black cumin seeds protein isolate (BCSPI) and its hydrolysates (BCSPH). BCSPI and BCSPH were characterized by high contents of protein (78.4–83.5%). Thermal characterization by DSC showed that the denaturation temperature (Td) increased from 90.7 to 131.9 °C. BCSPI was characterized by the lowest Td. The highest Td was observed for BCSPH with a hydrolysis degree (DH) of 14.74%. The enzymatic hydrolysis was found to enhance protein solubility. BCSPH (lowest DH = 12.58%) exhibited significantly higher emulsifying and foaming properties than BCSPI. The above observation was probably relating to the decrease of interfacial tension from 28.50 to 25.67 mN/m (BCSPH).Antioxidant activities of BCSPI and BCSPH were assessed in vitro through different antioxidant tests. At a concentration of 1 mg/mL, BCSPH with higher DH (19.63%) exhibited significantly the greatest scavenging activity (90.82%) towards DPPH radical. Antioxidant activities were improved with the increase of the degree of hydrolysis. The obtained data suggest that the choice of the hydrolysis degree can improve the functional and the antioxidant activities of protein isolate. Overall, BCSPH have peculiar techno-functional and antioxidant properties which promote their use in food, cosmetic or pharmaceutical products as natural dietary proteins.

The present work deals with the extraction and purification of chondroitin sulfate/dermatan sulfate from skin (CSG) and bone (CBG) of corb (Sciaena umbra). Electrophoresis of these polymers in barium acetate buffer on cellulose acetate revealed two fractions similar to dermatan sulfate and chondroitin sulfate. The in vivo anticoagulant activity of both chondroitin sulfate/dermatan sulfate (CS/DS) were evaluated, at 25 and 75 mg kg(-1) of body weight (b.w), using activated partial thromboplastin time (aPTT), prothrombine time (TT) and thrombin time (PT) tests. Results showed that aPTT of CSG and CBG at 75 mg kg(-1) of b.w were prolonged by 1.59 and 1.48-fold respectively, compared with the control. Further, toxicity studies on liver performed by the catalytic activity of transaminases in plasma, oxidative stress markers and hepatic morphological changes demonstrated that CSG and CBG at both doses are not toxics. In summary, the higher activity and lower toxicity of both CS/DS, especially at 25 mg kg(-1) of b.w, recommended these compounds as a better drug candidate. (C) 2020 Elsevier B.V. All rights reserved.

The aim of this work was to evaluate some biological properties of hake head oil (HHO) as well its lipid composition. The fatty acid profiles showed a dominance of unsaturated fatty acids overtaking 55% of the total fatty acids. Omega-3 polyunsaturated fatty acid profiles exhibited a dominance of EPA (eicosapentaenoic acid) (3.96%) and DHA (docosahexaenoic acid) (25.39%). The antioxidant activity was determined through two different assays: DPPH scavenging activity and β-carotene bleaching by linoleic acid assay. Eighteen mice were excised on their back and divided into 3 groups, treated with sterile saline, commercial healing cream and HHO, respectively. The wound closure rate, the hydroxyproline contents and the histopathology evolution in skin tissue were elaborated. Also, the anti-inflammatory activity was studied by carrageenan-induced mouse paw edema. Mice were divided into 3 groups treated respectively with sterile saline, anti inflammatory drug reference and HHO. The anti-inflammatory evaluation of HHO in mice exhibited an important inhibition of carrageenan-induced hind paws edema, as confirmed by the histological analysis, the superoxide dismutase (SOD), catalase (CAT) and malondialdehyde (MDA) level. HHO displayed a significant wound healing effect probably due to the anti-inflammatory and antioxidant activities of its EPA and DHA contents. The overall results proved that HHO might be favorable drugs who exert a great therapeutic potential wound healing and anti-inflammatory effects in animal model.

In the present study, polysaccharides were isolated from pistachio (Pistacia vera L.) external hull, with a yield of 4.10 % (w/w). The crude polysaccharides were composed by carbohydrates (80.64 +/- 0.98 %), while protein (1.80 +/- 0.28 %), ash (6.32 +/- 0.26 %) and fat (0.04 +/- 0.005 %) contents were low. Structural characteristics were determined using FTIR spectroscopy and C-13 NMR spectroscopy. The results by thin layer chromatography showed that the carbohydrate fraction was mainly composed of rhamnose, glucose, galactose, mannose, xylose, arabinose, and galacturonic acid. Antioxidant activities of the crude polysaccharides were investigated by various antioxidant assays: DPPH radical-scavenging capacity (IC50 = 0.08 mg/mL), reducing power, beta-carotene bleaching inhibition (IC50 = 0.068 mg/mL), and ABTS assay. The application of crude pistachio hull polysaccharides on minced meat, as preservative, reduced the lipid oxidation during chilled storage for 9 days. The obtained results also showed significant improvement of meat color stability. Overall, these findings indicated that crude polysaccharides are worthy being developed as functional and bioactive components for the food and nutraceutical industries.

The aim of the current study was to compare crude polysaccharides extracted from Schinus terebinthifolius Raddi (PSTF) and S. molle L. (PSMF) fruits based on their structures, physicochemical characteristics, monosaccharide composition, as well as in vitro and in vivo assays. The extraction yield of PSTF (4.26%) was higher than that of PSMF (3.56%). Remarkable variability was detected in the content of carbohydrates (80.64 +/- 0.98%), protein (1.80 +/- 0.28%), fat (0.04 +/- 0.005%) and ash (6.32 +/- 0.26%). FT-IR assay and H-1 and C-13 NMR spectroscopy revealed that fruits extract showed similar structural characteristics. Thin layer chromatography together with HPLC-RID analysis showed that the monosaccharide composition varied significantly between species. Both contained arabinose (40.55-42.03%) galacturonic acid (31.21-41.15%), and fucose (10.90-17.63%), but PSTF had glucose (9.13%) whereas PSMF had galactose (7.40%). Functional analyses demonstrated that samples exhibited favorable water- and oil-retention capacity, emulsifying properties, and foaming qualities. PSTF exhibited the highest antioxidant effects. Both of them showed a remarkable in vitro antidiabetic effect. PSMF highly mitigated H2O2-induced hemolysis and exhibited similar to 80% antihemolytic activity. The extracted polysaccharides showed potent inhibitory activity against AAPH-induced plasmid DNA damage. PSTF and PSMF revealed interesting in vivo antinociceptive and anti-inflammatory capacities. (C) 2020 Published by Elsevier B.V.

European eel by-products have been hydrolysed in order to produce novel bioactive peptides with antibacterial and antioxidant activity. Protein hydrolysates from Anguilla by-products obtained by treatment with Savinase® (PHAB-s) have high protein content than that produced with Protamex® (PHAB-p). Furthemore, both protein hydrolysates had a high percentage of essential amino acids. In addition, results indicated that PHAB-s and PHAB-p exhibited different degrees of antioxidant activities, evaluated by several antioxidant assays. Thus, PHAB-s displayed high antioxidant activity, in terms of DPPH-radical scavenging effect (IC 50 = 5.2 mg/ml), β-carotene bleaching inhibitory effect (CI 50 = 4.4 mg/ml) and metal chelating activity. At 10 mg/ml, PHAB-p showed the highest reducing power. Antibacterial activities of PHAB-s and PHAB-p were also evaluated. PHAB-s showed the most important inhibitory effects against seven bacterial species. The application of PHAB-s and PHAB-p on minced meat as preservative reduced the lipid oxidation and inhibited the microbial growth during chilled storage for 11 days.