Abstract: Suggested is a method for identifying fragrance compounds with low environmental impact and high degree of sustainability encompassing the following steps: (a) providing a fragrance compound or a fragrance composition of interest; (b) calculating scores for each of the following parameters (b1) biodegradability; (b2) biodiversity; (b3) carbon dioxide impact; (b4) process safety with regard to ecological toxicity; (b5) process safety with regard to human toxicity; (b6) land use; (b7) renewability; (b8) traceability; (b9) waste generation; and (b10) water consumption and/or pollution, (c) summing up all scores and calculate the average product sustainability score (PSC); and (d) proceed with those candidates showing a PSC of at least 70.

Abstract: Suggested is a method for identifying fragrance compounds with low environmental impact and high degree of sustainability encompassing the following steps: (a) providing a fragrance compound or a fragrance composition of interest; (b) calculating scores for each of the following parameters (b1) biodegradability; (b2) biodiversity; (b3) carbon dioxide impact; (b4) process safety with regard to ecological toxicity; (b5) process safety with regard to human toxicity; (b6) land use; (b7) renewability; (b8) traceability; (b9) waste generation; and (b10) water consumption and/or pollution, (c) summing up all scores and calculate the average product sustainability score (PSC); and (d) proceed with those candidates showing a PSC of at least 70.

Abstract: A process for the preparation of 1,2-pentanediol by reaction of a starting material comprising one or both compounds from the group consisting of furfuryl alcohol and furfural with hydrogen in the presence of a first heterogeneous catalyst is described.

Abstract: A process for the preparation of 1,2-pentanediol by reaction of a starting material comprising one or both compounds from the group consisting of furfuryl alcohol and furfural with hydrogen in the presence of a first heterogeneous catalyst is described.

Abstract: The present invention relates to the use of 4-methyl-delta-hexylactone for imparting, modifying and/or intensifying one or more smell or flavor impressions from the group consisting of hay, coumarin, lactone and richness in the mouth.

Abstract: The present invention relates to the use of 4-methyl-delta-hexylactone for imparting, modifying and/or intensifying one or more smell or flavour impressions from the group consisting of hay, coumarin, lactone and richness in the mouth.

Abstract: There is described the utilization of thiocarbonic acid or carbothioic acid of the general formula ##STR1## R=Methyl, Ethyl, Propyl, Phenyl as an aroma and/or flavor substance. Further, aroma and/or flavor substance compositions are described, which have a content of thiocarbonic acid or carbothioic acids of the general formula I. It is preferred that the content of the thiocarbonic acid or carbothioic acids are between 10.sup.-6 and 5.times.10.sup.-4. Tropical aromas and scent substances in particular can be positively influenced olfactorily and sensorily.