Variability of exotic ginger (Zingiber officinale Rosc.) accessions for quality parameters

Abstract

Ginger (Zingiber officinale) is one of the important and widely used spices throughout the world in fresh and dried forms. The study on quality characterization and essential oil profiling of 13 ginger genotypes was conducted at ICAR-Indian Institute of Spices Research, Kozhikode, Kerala, during 2019-2020. The genotypes included eight promising exotic accessions (Acc. 393, Acc. 607, Acc. 736, Acc. 833, Acc. 869, Acc. 872, Acc. 873 and Acc. 874), four popular cultivars (Nadan, Himachal, Maran, Rio-de-Janeiro) and a released variety IISR Varada. Significant differences among the genotypes were recorded for various quality parameters such as oleoresin, essential oil and crude fibre content. Among the exotic genotypes, Acc. 869 recorded the highest essential oil content (2.44%), followed by Acc. 393 (2.42%), Acc. 833 and Acc. 873 (2.10%). The accessions, Acc. 869, Acc. 874, Acc. 873 and Acc. 393 recorded higher oleoresin content of 5.88 per cent, 5.63 per cent, 5.34 per cent and 5.28 per cent, respectively. Considering essential oil and oleoresin contents, the exotic accessions, Acc. 873, Acc. 393 and Acc. 869 were identified as promising genotypes. Among the other genotypes, Rio-de-Janeiro recorded the highest essential oil (2.76%) and oleoresin content (6.69%). The exotic genotypes, viz., Acc. 607, Acc. 736 and Acc. 393 recorded crude fibre content of less than 5 per cent whereas, Acc. 869 recorded the maximum of 7.85 per cent. Fifty compounds were identified through essential oil profiling, and the major classes were sesquiterpene hydrocarbons followed by monoterpene hydrocarbons. The major compound identified was α-zingiberene and was highest in Acc. 393 (30.49%), followed by Maran (30.32%).

Quality Evaluation of Ginger (Zingiber officinale Rosc.) Germplasms under New Alluvial Zone of West Bengal, India

“…However, this variation of essential oil content might be due to genetic factors of different genotypes from different places of collection. These findings were also supported by earlier studies [31][32][33].…”

Evaluation of Different Integrated Disease Management Approaches for Rhizome Rot of Ginger (Zingiber officinale Roscoe.) Caused by Ralstonia solanacearum (Smith.) under Field Conditions

“…Maximum temperature attained decrease with increasing soil depths. Balakrishnan et al [24] reported that, there was increase in temperature in solarized plot by 8 O C at 5 cm depth over non-solarized plot. Benefit cost ratio T 1 Rhizome treatment with Streptocycline @ 0.5 g + COC @ 3.0 g/l of water + soil application with neem cake 3q/ha followed by drenching with bleaching powder (33%) @ 2.0 g/l + Metalaxyl MZ @ 1.0 g/lit for water three time at 20 days intervals + Ginger special spray 45 DAS.…”

Physico-Chemical Attributes of Essential Oil from <i>Zingiber officinale</i> Roscoe and <i>Zingiber zerumbet</i> (L.) Smith Cultivars Grown in Togo

“…Fifty grams (50 g) of the fine powder of each material were introduced in the Clevenger-type apparatus with 0.5 liter of distilled water [10]. The mixture was put under heating at 100˚C using a hot plate-type IRS France and extracted for 2 hours.…”

“…Samples from three localities (Kaniamboua, Danyi Apéyémé, Blitta-Tadjan) showed an essential oil yield higher or equal to 1.5%. Steam distillation of Z. officinale essential oil yields 0.2% to 3.0% according to the origin and the state of the rhizome (fresh or dry) [10] [30] [34] [35]. The density of essential oils ranged from 0.876 (Badou) to 0.897 (Blita-Tadjan) and the refractive index from 1.487 (Dalanda and Danyi Apéyémé) to 1.491 (Blitta-Tadjan).…”

“…In general, these variations are attributable to many factors such as topological and geographical location as well as maturity of rhizomes, harvesting time, genetic variation, extraction process [10] [22] [39] [40] [41]. Even if both Z. officinale and Z. zerumbet rhizome from Kaniamboua present best potential for essential oil production and commercialization, all sample match international requirement as soon as they yielded higher than 0.4% [42].…”