Key points about the role of pineapple enzymes in soil microbes are:
Compost or organic amendments containing pineapple residues increase soil microbial abundance, including bacteria, fungi, and actinomycetes. This stimulates various soil enzyme activities such as catalase, acid phosphatase, and invertase, which are produced by soil microbes and reflect enhanced microbial biochemical activity and soil fertility.
Pineapple residues, rich in organic matter and enzymes like bromelain, promote microbial metabolic processes that improve nutrient cycling, root growth, and nutrient availability (especially phosphorus and potassium). This improves plant growth and soil quality over time.
Soil enzyme activities such as cellulase, invertase, and phosphatase—produced by microbes—are indicators of microbial activity and soil biological fertility. Pineapple-derived organic inputs support these enzymes, which break down complex organic compounds into nutrients plants can uptake.
Bromelain and related enzymes primarily aid in protein breakdown, indirectly supporting soil microbes by making nitrogen and other nutrients more available. Enhanced microbial populations then drive further decomposition and nutrient mineralization.
Application of pineapple peel-based eco-enzymes or compost has been found to improve soil pH, organic carbon content, and nutrient availability, creating favorable conditions for diverse microbial communities to thrive and support plant growth.
In summary, while pineapple enzymes like bromelain do not act directly on soil microbes, they contribute to creating a conducive biochemical environment that stimulates microbial activity, diversity, and associated enzyme production. This enhances soil nutrient cycling and fertility when pineapple residues or compost are incorporated into soils.
References:
Effects of composted pineapple residue on soil microbes & enzymes
Bromelain as a proteolytic enzyme from pineapple
Soil enzymes, microbes, and pineapple plantation productivity
Pineapple peel eco enzyme effects on soil characteristics
Pineapple peel organic amendments improving soil pH, microbial activity