Total quality index approach was used to reflect the quality of Pleurotus ostreatus mushroom, cultivated on grape pomace (P) as food waste substrate and wheat straw (S), in four different combined ratios: 100P; 80P20S; 50P50S; and 20P80S, with 100S, serving as control substrate. This approach involved two directions of mushroom analysis. The whole mushroom fruiting bodies analysis introduced a single total quality index (TQIM) based on 11 quality parameters. The mushroom water extracts analysis was presented by another single total quality index (TQIE), with seven quality parameters. This mathematical model revealed that the mushroom extracts have a better overall quality score with higher pomace content in substrate mixture, compared to the whole mushroom quality changes throughout the observed shelf life period. Future research may pay attention to the phytotoxicity of grape pomace as a food waste, as well as the influence of grape pomace on glucan content, as a health‐beneficial compounds. Practical applications From the sustainable part of view, advantage of this type of production is its belonging to the sustainable food waste management strategy. The main importance of food waste use is their exploitation through bioconversion process into the new value‐added products, generating near zero waste. Also, the type and chemical composition of plant waste used as mushroom substrate affects the nutritional profile and quantity of the produced mushroom. Therefore, the application of this principle of production benefits winemakers on the one hand, eliminating the generation of toxic waste and protecting the environment. From a quality point of view, approach outlined in this research shows practical application of using quality index as a tool for overall quality evaluation. Finally, combining food waste for producing mushrooms evaluated through a quality index perspective paves the way for increasing mushroom in the mushroom values chain.

BACKGROUNDGrowing population demands more animal protein products. Pork remains one of the traditional and relatively sustainable types of meats for human consumption. In this paper, life‐cycle assessment was performed using data from 12 pig farms. In parallel, a survey on the consumption of pork meat products was conducted analyzing responses from 806 pork meat consumers. The study aims to provide a quantitative calculation of six environmental footprints associated with the consumption of pork meat products in Serbia by analyzing data from pig farms and a pork meat consumption survey.RESULTSResults revealed that pork meat production is responsible for the emission of 3.50 kg CO2e kg−1 live weight, 16.1 MJe kg−1, 0.151 mg R11e kg−1, 31.257 g SO2e kg−1, 55.030 g PO4e kg−1 and 3.641 kg 1.4 dBe kg−1. Further calculations reveal that weekly emissions of various environmental potentials associated with an average consumer of pork meat products in Serbia are estimated at values of 4.032 kg CO2e week−1, 18.504 MJe week−1, 0.17435 mg R11e week−1, 35.972 g SO2e week−1 and 63.466 g PO4e week−1.CONCLUSIONSResults show that, on the one hand, pork products are responsible for environmental production impacts that mainly occur on farms while, on the other hand, consumption is characterized with high meat inclusion rates. As a leverage strategy it is recommended for producers to concentrate on lowering the production impacts rather than trying to reach consumers for sustainability conciseness. © 2020 Society of Chemical Industry

Pleurotus ostreatus (P. ostreatus) is considered a high-quality food, rich in proteins and bioactive compounds important for maintaining human health. Lately, a commonly used substrate for oyster mushroom cultivation—wheat straw, is more often replaced by alternative cellulose substrates originated from the agricultural and food industry. Utilization of wastes for mushroom cultivation has its added value: sustainable food waste management, production of high-quality food from low quality waste, as well as solving environmental, economic and global issues. This overview covered three categories of food waste: food-processing wastes, agro-cereal wastes and nut–fruit wastes, the most used for the cultivation P. ostreatus in the period of 2017–2022. Analyzed studies mostly covered the productivity and chemical characterization of the substrate before and after the cultivation process, as well as the morphological characteristics of the fruiting bodies cultivated on a specific substrate. Chemical analyses of mushrooms cultivated on food waste are not adequately covered, which gives room for additional research, considering the influence of substrate type and chemical quality on the fruiting bodies chemical composition.

Oyster mushroom (Pleurotus ostreatus) (Jacq. ex Fr.), P. Kummer (1871), was recognized as one of the most consumed species, for its mild and unique taste, which enriches world cuisine. Besides being commercially important, P. ostreatus is embedded with a health benefit potential, such as immunomodulatory, antitumor, anti-inflammatory, antioxidant, and antimicrobial effects (Corrêa et al., 2016).

The objective of this study was to develop a single quality index of chemical characteristics of Pleurotus ostreatus extracts on 7th and 14th day of its shelf life, derived from the mushroom fruiting bodies. P. ostreatus was cultivated on four substrates containing different ratio of wine industry waste-grape pomace (P) and wheat straw (S): 100P, 80P20S, 50P50S, 20P80S. Four quality parameters of P. ostreatus mushroom extracts, i.e. antioxidative parameters: ABTS+ and DPPH? free radical scavenging capability, total phenolic compounds (TPC) and total polysaccharides (TPS) were used to define the final extract quality index. Analysis indicated 100P and 80P20S as the samples cultivated on the substrate with higher percent of grape pomace, as the best quality at the 7th day of its shelf life. On the other hand, final quality score indicated 50P50S and 20P80S, cultivated on a substrate with a lower percent of grape pomace, as the best quality samples at the 14th day of its shelf life. According to the results, samples cultivated on a higher pomace content substrate are of better quality in a shorter storage time period.