<p>The population is rising to different heights each day. It leads to increased agricultural production for fulfilling the basic need of man: 'food'. As a result of increased production, the amount of waste generated also increases. This enormous waste is now posing threat to both humanity and the environment.&nbsp;</p><h3 class=""><b><u>Keywords</u></b>:&nbsp;<span style="color: rgb(46, 46, 46); font-family: Helvetica;">agri-food waste</span><span style="color: rgb(46, 46, 46); font-family: Helvetica;">,&nbsp;</span><span style="color: rgb(46, 46, 46); font-family: NexusSerif, Georgia, &quot;Times New Roman&quot;, Times, STIXGeneral, &quot;Cambria Math&quot;, &quot;Lucida Sans Unicode&quot;, &quot;Microsoft Sans Serif&quot;, &quot;Segoe UI Symbol&quot;, &quot;Arial Unicode MS&quot;, serif; font-size: 18px;"><span style="font-family: Helvetica; font-size: 14px;">f</span></span><span style="color: rgb(46, 46, 46); font-family: Helvetica;">ood waste management,&nbsp;</span>green circular,&nbsp;<span style="color: rgb(46, 46, 46); font-family: Helvetica;">natural bioactive pigments,&nbsp;</span><span style="color: rgb(46, 46, 46); font-family: Helvetica;">green solvents,&nbsp;</span>sustainability</h3><p><br></p><p><span style="font-family: Helvetica; font-size: 14px;">Addressing this issue and developing solutions to it is the need of the era. For developing a solution to this issue people need to use</span><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;"><span style="font-family: Helvetica; font-size: 14px;">&nbsp;promising green technologies to manage and valorize agri-food waste into valuable food additives.</span><span style="font-size: 14px; font-family: Helvetica;">&nbsp;</span></span><span style="color: rgb(46, 46, 46); font-family: NexusSerif, Georgia, &quot;Times New Roman&quot;, Times, STIXGeneral, &quot;Cambria Math&quot;, &quot;Lucida Sans Unicode&quot;, &quot;Microsoft Sans Serif&quot;, &quot;Segoe UI Symbol&quot;, &quot;Arial Unicode MS&quot;, serif; font-size: 18px;"><span style="font-family: Helvetica; font-size: 14px;">T</span><span style="font-family: Helvetica; font-size: 14px;"><span style="font-size: 14px; font-family: Helvetica;">he recovery of value-added pigments from agri-food waste as natural food colorants is one of the new business prospects being created by approaches influenced by the circular economy model. This method is now growing and being adopted by many people worldwide.</span><span style="font-family: Helvetica; font-size: 14px;">&nbsp;</span><span style="font-family: Helvetica; font-size: 14px;">T</span></span></span><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">he circular economy has the potential to protect valuable and scarce non-renewable resources.</span></p><p><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;"><br></span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<img src="/media/django-summernote/2022-11-04/cef87e99-a9ad-4133-83c7-e8634aa8aa73.jpg" style="width: 396.889px; height: 396.889px;"></p><p><span style="color: rgb(46, 46, 46); font-family: NexusSerif, Georgia, &quot;Times New Roman&quot;, Times, STIXGeneral, &quot;Cambria Math&quot;, &quot;Lucida Sans Unicode&quot;, &quot;Microsoft Sans Serif&quot;, &quot;Segoe UI Symbol&quot;, &quot;Arial Unicode MS&quot;, serif; font-size: 18px;"><span style="font-family: Helvetica; font-size: 14px;">Food waste management is the proper way to efficiently utilize waste. The pillars of f</span></span><span style="color: rgb(46, 46, 46); font-family: Helvetica;">ood waste management are:</span></p><ol><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Reducing food waste generation</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Utilizing the food waste for reuse</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Valorising food waste for the recovery of natural bioactive compounds</span></li></ol><p><font color="#2e2e2e" face="Helvetica">Increasing the utilization of food waste lowers the environmental effects.&nbsp;</font></p><p><font color="#2e2e2e" face="Helvetica">Generally, natural bioactive pigments are extracted from food waste using conventional methods. But the conventional methods have certain disadvantages as follows:</font></p><ul><li><font color="#2e2e2e" face="Helvetica">Time-consuming</font></li><li><font color="#2e2e2e" face="Helvetica">Large solvent consumption</font></li><li><font color="#2e2e2e" face="Helvetica">Lower yield</font></li><li><font color="#2e2e2e" face="Helvetica">Unsafe to the environment</font></li><li><font color="#2e2e2e" face="Helvetica">Unsafe for human health</font></li><li><font color="#2e2e2e" face="Helvetica">Less economic</font></li><li><font color="#2e2e2e" face="Helvetica">Less sustainable</font></li><li><font color="#2e2e2e" face="Helvetica">Inconvenient</font></li><li><font color="#2e2e2e" face="Helvetica">Nutrient loss</font></li></ul><p><font color="#2e2e2e" face="Helvetica">It is thus necessary to use environmentally friendly solvents. For this purpose, green solvents are needed. Currently,&nbsp;</font><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">ionic solvents (ILs), deep eutectic solvents (DESs), ethanol, water, edible oils, inert gases (CO</span><span style="margin: 0px; padding: 0px; font-size: 14px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; color: rgb(46, 46, 46); font-family: Helvetica;">2</span><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">), etc. The advantages of green solvents compared to traditional solvents are:</span></p><ul><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">High yield</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Safe to the environment</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Safe for human health</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Convenient</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Value food safety</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">More economic</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Less nutrient loss</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Sustainable</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Less time-consuming</span></li></ul><p>The plant-derived bioactive pigments include carotenoids, anthocyanins, chlorophylls, lutein, and betalains. There are various green valorization technologies used for deriving plant natural pigments. They are:</p><ol><li><span style="color: rgb(46, 46, 46); font-family: NexusSerif, Georgia, &quot;Times New Roman&quot;, Times, STIXGeneral, &quot;Cambria Math&quot;, &quot;Lucida Sans Unicode&quot;, &quot;Microsoft Sans Serif&quot;, &quot;Segoe UI Symbol&quot;, &quot;Arial Unicode MS&quot;, serif; font-size: 18px;">&nbsp;<span style="font-family: Helvetica; font-size: 14px;">U</span><span style="font-family: Helvetica; font-size: 14px;">ltrasonic assisted extraction</span></span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Ohmic heating</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Microwave assisted extraction</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">High voltage discharges&nbsp;</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Pulsed-electric field assisted extraction</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Pressurized liquid extraction</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Light stresses</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Supercritical fluid extraction</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Enzyme assisted extraction</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">High-pressure processing</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Ionizing radiation</span></li></ol><p>The circular economy has been used to increase resource consumption for the proper balancing of economic, environmental, and societal costs. The implementation of green circular technology will help in increasing and broadening the markets for bio-based goods. For the fulfillment of the Sustainable Development Goals(SDG) of the UN, the valorization of food waste can play an important role.&nbsp;</p><p>Conclusion:</p><p>To achieve sustainability in using green technologies, people must be aware of these technologies, their impacts, and their benefits. To achieve a green circular economy in the area of agri-food waste valorization for bioactive pigments, it is necessary to:</p><ul><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Discover newer food waste resources of pigment potential</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Establish &amp; explore more advanced green valorization technologies with enhanced extraction yield, low solvent consumption, or solvent free strategies</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Reconnoitre novel green solvents with improved efficiency</span></li><li><span style="color: rgb(46, 46, 46); font-family: Helvetica; font-size: 14px;">Redesign the integrated or combinatorial approaches to support the post-extraction zero-waste concept and generate minimal greenhouse gas emissions (GHGs).</span><span style="color: rgb(46, 46, 46); font-family: NexusSerif, Georgia, &quot;Times New Roman&quot;, Times, STIXGeneral, &quot;Cambria Math&quot;, &quot;Lucida Sans Unicode&quot;, &quot;Microsoft Sans Serif&quot;, &quot;Segoe UI Symbol&quot;, &quot;Arial Unicode MS&quot;, serif; font-size: 18px;"><br></span></li></ul>