EFFECT OF BIOPOLYMER BASED FILM ENRICHED WITH COFFE PULP EXTRACT ON THE QUALITY OF TURKISH COFFEE

Project no. 32561 · Status: Kapanmış (Yayın bekleniyor) · 2024

Summary

<p>In&nbsp;this&nbsp;study,&nbsp;the&nbsp;usability&nbsp;of&nbsp;sodium&nbsp;alginate-based&nbsp;films&nbsp;enriched&nbsp;with&nbsp;coffee&nbsp;pulp</p><p>extract&nbsp;for&nbsp;packaging&nbsp;Turkish&nbsp;coffee&nbsp;and&nbsp;their&nbsp;effects&nbsp;on&nbsp;the&nbsp;quality&nbsp;of&nbsp;Turkish&nbsp;coffee&nbsp;were</p><p>investigated.&nbsp;As&nbsp;an&nbsp;approach&nbsp;to&nbsp;reducing&nbsp;food&nbsp;waste,&nbsp;the&nbsp;addition&nbsp;of&nbsp;coffee&nbsp;pulp&nbsp;extract&nbsp;to</p><p>sodium&nbsp;alginate&nbsp;films&nbsp;aimed&nbsp;to&nbsp;enrich&nbsp;the&nbsp;film&nbsp;content.&nbsp;In&nbsp;the&nbsp;study,&nbsp;the&nbsp;extraction&nbsp;of&nbsp;phenolic</p><p>compounds&nbsp;from&nbsp;coffee&nbsp;pulp&nbsp;was&nbsp;carried&nbsp;out&nbsp;using&nbsp;the&nbsp;ultrasonic-assisted&nbsp;extraction&nbsp;method.</p><p>The&nbsp;coffee&nbsp;pulp&nbsp;extracts&nbsp;were&nbsp;analyzed&nbsp;for&nbsp;total&nbsp;phenolic&nbsp;compounds,&nbsp;antioxidant&nbsp;activity&nbsp;and</p><p>total&nbsp;flavonoid&nbsp;content.&nbsp;In&nbsp;sodium&nbsp;alginate&nbsp;(2%,&nbsp;w/v)&nbsp;films&nbsp;and&nbsp;sodium&nbsp;alginate-based&nbsp;films</p><p>containing&nbsp;0.5%&nbsp;(v/v),&nbsp;1.0%&nbsp;(v/v),&nbsp;and&nbsp;1.5%&nbsp;(v/v)&nbsp;extract,&nbsp;film&nbsp;solubility,&nbsp;film&nbsp;thickness,&nbsp;light</p><p>transmittance&nbsp;and&nbsp;opacity,&nbsp;color,&nbsp;elongation&nbsp;at&nbsp;break,&nbsp;tensile&nbsp;strength,&nbsp;total&nbsp;phenolic&nbsp;content,</p><p>antioxidant&nbsp;activity,&nbsp;scanning&nbsp;electron&nbsp;microscopy&nbsp;(SEM)&nbsp;imaging&nbsp;and&nbsp;Fourier&nbsp;transform</p><p>infrared&nbsp;spectroscopy&nbsp;(FT-IR)&nbsp;analyses&nbsp;were&nbsp;performed.&nbsp;In&nbsp;the&nbsp;optimization&nbsp;study&nbsp;carried&nbsp;out</p><p>on&nbsp;the&nbsp;films&nbsp;using&nbsp;the&nbsp;response&nbsp;surface&nbsp;methodology,&nbsp;the&nbsp;extract&nbsp;ratio&nbsp;(%)&nbsp;was&nbsp;selected&nbsp;as&nbsp;the</p><p>independent&nbsp;variable&nbsp;within&nbsp;the&nbsp;scope&nbsp;of&nbsp;a&nbsp;single-factor&nbsp;Optimal&nbsp;Custom&nbsp;design.&nbsp;Total&nbsp;phenolic</p><p>content&nbsp;(mg&nbsp;GAE/g),&nbsp;antioxidant&nbsp;activity&nbsp;(%),&nbsp;and&nbsp;opacity&nbsp;at&nbsp;600&nbsp;nm&nbsp;were&nbsp;evaluated&nbsp;as</p><p>dependent&nbsp;variables.&nbsp;As&nbsp;a&nbsp;result&nbsp;of&nbsp;the&nbsp;optimization,&nbsp;the&nbsp;most&nbsp;suitable&nbsp;formulation&nbsp;was</p><p>determined&nbsp;to&nbsp;be&nbsp;the&nbsp;sodium&nbsp;alginate&nbsp;film&nbsp;containing&nbsp;1.5%&nbsp;extract.&nbsp;Moisture,&nbsp;protein,&nbsp;total</p><p>invert&nbsp;sugar,&nbsp;and&nbsp;fat&nbsp;contents&nbsp;were&nbsp;analyzed&nbsp;in&nbsp;Turkish&nbsp;coffee.&nbsp;During&nbsp;storage&nbsp;analyses&nbsp;were</p><p>performed&nbsp;on&nbsp;specific&nbsp;days&nbsp;(day&nbsp;0,&nbsp;day&nbsp;5,&nbsp;day&nbsp;10,&nbsp;day&nbsp;20,&nbsp;and&nbsp;day&nbsp;30).&nbsp;The&nbsp;analyses&nbsp;were</p><p>applied&nbsp;to&nbsp;three&nbsp;product&nbsp;groups:&nbsp;the&nbsp;control&nbsp;group&nbsp;(unpackaged&nbsp;coffee),&nbsp;coffee&nbsp;packaged&nbsp;with</p><p>sodium&nbsp;alginate&nbsp;film,&nbsp;and&nbsp;coffee&nbsp;packaged&nbsp;with&nbsp;sodium&nbsp;alginate&nbsp;film&nbsp;containing&nbsp;1.5%&nbsp;extract.</p><p>During&nbsp;storage&nbsp;Turkish&nbsp;coffee&nbsp;was&nbsp;analyzed&nbsp;for&nbsp;pH,&nbsp;weight&nbsp;change,&nbsp;water&nbsp;activity,&nbsp;color,</p><p>solubility&nbsp;time,&nbsp;total&nbsp;phenolic&nbsp;content,&nbsp;total&nbsp;flavonoid&nbsp;content,&nbsp;antioxidant&nbsp;activity,&nbsp;analysis&nbsp;of</p><p>caffeine&nbsp;and&nbsp;phenolic&nbsp;compounds&nbsp;by&nbsp;the&nbsp;HPLC&nbsp;method&nbsp;(days&nbsp;0&nbsp;and&nbsp;30)&nbsp;and&nbsp;sensory&nbsp;properties</p><p>(days&nbsp;0&nbsp;and&nbsp;30).&nbsp;As&nbsp;a&nbsp;result,&nbsp;it&nbsp;was&nbsp;determined&nbsp;that&nbsp;the&nbsp;edible&nbsp;film&nbsp;enriched&nbsp;with&nbsp;coffee&nbsp;pulp</p><p>extract&nbsp;was&nbsp;effective&nbsp;in&nbsp;reducing&nbsp;quality&nbsp;losses&nbsp;in&nbsp;Turkish&nbsp;coffee&nbsp;during&nbsp;storage.</p><p>Keywords:&nbsp;Edible&nbsp;film,&nbsp;sodium&nbsp;alginate,&nbsp;coffee&nbsp;pulp&nbsp;extract,&nbsp;food&nbsp;waste,&nbsp;Turkish&nbsp;coffee,</p><p>packaging</p>

View details